diff --git a/chrome/locale/af-ZA/zotero/zotero.dtd b/chrome/locale/af-ZA/zotero/zotero.dtd
index 4396ad80a6..5f40a9339d 100644
--- a/chrome/locale/af-ZA/zotero/zotero.dtd
+++ b/chrome/locale/af-ZA/zotero/zotero.dtd
@@ -111,7 +111,6 @@
 <!ENTITY zotero.item.textTransform.sentencecase "Sentence case">
 <!ENTITY zotero.item.creatorTransform.nameSwap "Swap First/Last">
 <!ENTITY zotero.item.creatorTransform.fixCase "Fix Case">
-<!ENTITY zotero.item.viewOnline "View Online">
 <!ENTITY zotero.item.copyAsURL "Copy as URL">
 <!ENTITY zotero.item.deletePermanently "Delete Permanently…">
 
diff --git a/chrome/locale/af-ZA/zotero/zotero.properties b/chrome/locale/af-ZA/zotero/zotero.properties
index 690834d9c7..85d73825f5 100644
--- a/chrome/locale/af-ZA/zotero/zotero.properties
+++ b/chrome/locale/af-ZA/zotero/zotero.properties
@@ -417,6 +417,10 @@ pane.item.notes.ignoreMissingImage=Some note images are missing and cannot be co
 pane.item.attachments.rename.title=New title:
 pane.item.attachments.rename.renameAssociatedFile=Rename associated file
 pane.item.attachments.rename.error=An error occurred while renaming the file.
+pane.item.attachments.rename.confirmExtChange.text1=Are you sure you want to change the file extension from “%S” to “%S”?
+pane.item.attachments.rename.confirmExtChange.text2=If you change the extension, the file may open with a different application outside of %S.
+pane.item.attachments.rename.confirmExtChange.keep=Keep %S
+pane.item.attachments.rename.confirmExtChange.change=Use %S
 pane.item.attachments.fileNotFound.title=File Not Found
 pane.item.attachments.fileNotFound.text1=The attached file could not be found.
 pane.item.attachments.fileNotFound.text1.path=The attached file could not be found at the following path:
@@ -448,7 +452,6 @@ pane.item.tags.icon.user=User-added tag
 pane.item.tags.icon.automatic=Automatically added tag
 pane.item.tags.removeAll=Remove all tags from this item?
 pane.item.parentItem=Parent Item:
-pane.item.viewOnline.tooltip=Go to this item online
 
 pane.context.noParent=No parent item
 pane.context.itemNotes=Item Notes
@@ -922,6 +925,8 @@ integration.removeBibEntry.body=Are you sure you want to omit it from your bibli
 
 integration.cited=Cited
 integration.cited.loading=Loading Cited Items…
+integration.openTabs=Open Documents
+integration.selectedItems=Selected Items
 integration.ibid=ibid
 integration.emptyCitationWarning.title=Blank Citation
 integration.emptyCitationWarning.body=The citation you have specified would be empty in the currently selected style. Are you sure you want to add it?
diff --git a/chrome/locale/ar/zotero/zotero.dtd b/chrome/locale/ar/zotero/zotero.dtd
index c2227c83d5..f87ffe7fe3 100644
--- a/chrome/locale/ar/zotero/zotero.dtd
+++ b/chrome/locale/ar/zotero/zotero.dtd
@@ -111,7 +111,6 @@
 <!ENTITY zotero.item.textTransform.sentencecase "حالة الجملة">
 <!ENTITY zotero.item.creatorTransform.nameSwap "Swap First/Last">
 <!ENTITY zotero.item.creatorTransform.fixCase "Fix Case">
-<!ENTITY zotero.item.viewOnline "العرض على الانترنت">
 <!ENTITY zotero.item.copyAsURL "نسخ كمسار انترنت">
 <!ENTITY zotero.item.deletePermanently "حذف نهائي...">
 
diff --git a/chrome/locale/ar/zotero/zotero.properties b/chrome/locale/ar/zotero/zotero.properties
index 9c0fa47c55..64dbeed765 100644
--- a/chrome/locale/ar/zotero/zotero.properties
+++ b/chrome/locale/ar/zotero/zotero.properties
@@ -417,6 +417,10 @@ pane.item.notes.ignoreMissingImage=Some note images are missing and cannot be co
 pane.item.attachments.rename.title=عنوان جديد:
 pane.item.attachments.rename.renameAssociatedFile=إعادة تسمية الملف المرتبط
 pane.item.attachments.rename.error=حدث خطأ أثناء إعادة تسمية الملف.
+pane.item.attachments.rename.confirmExtChange.text1=Are you sure you want to change the file extension from “%S” to “%S”?
+pane.item.attachments.rename.confirmExtChange.text2=If you change the extension, the file may open with a different application outside of %S.
+pane.item.attachments.rename.confirmExtChange.keep=Keep %S
+pane.item.attachments.rename.confirmExtChange.change=Use %S
 pane.item.attachments.fileNotFound.title=الملف غير موجود
 pane.item.attachments.fileNotFound.text1=The attached file could not be found.
 pane.item.attachments.fileNotFound.text1.path=The attached file could not be found at the following path:
@@ -448,7 +452,6 @@ pane.item.tags.icon.user=الوسم المضاف من قبل المستخدم
 pane.item.tags.icon.automatic=الوسم المضاف تلقائياً
 pane.item.tags.removeAll=أزاله كل الوسوم من هذا العنصر ؟
 pane.item.parentItem=عنصر رئيسي:
-pane.item.viewOnline.tooltip=الذهاب لهذا العنصر على الانترنت
 
 pane.context.noParent=No parent item
 pane.context.itemNotes=Item Notes
@@ -922,6 +925,8 @@ integration.removeBibEntry.body=هل ترغب في حذفه من قائمة ال
 
 integration.cited=استشهاد
 integration.cited.loading=البحث عن عناصر استشهاد...
+integration.openTabs=Open Documents
+integration.selectedItems=Selected Items
 integration.ibid=المرجع السابق
 integration.emptyCitationWarning.title=استشهاد فارغ
 integration.emptyCitationWarning.body=الاقتباس الذي قمت بتحديده سيكون فارغ في النمط المحدد حاليا. هل ترغب في إضافته؟
diff --git a/chrome/locale/bg-BG/zotero/zotero.dtd b/chrome/locale/bg-BG/zotero/zotero.dtd
index 08acfd8157..62af18d937 100644
--- a/chrome/locale/bg-BG/zotero/zotero.dtd
+++ b/chrome/locale/bg-BG/zotero/zotero.dtd
@@ -111,7 +111,6 @@
 <!ENTITY zotero.item.textTransform.sentencecase "Първа главна буква">
 <!ENTITY zotero.item.creatorTransform.nameSwap "Swap First/Last">
 <!ENTITY zotero.item.creatorTransform.fixCase "Fix Case">
-<!ENTITY zotero.item.viewOnline "Разглеждане онлайн">
 <!ENTITY zotero.item.copyAsURL "Копирай като URL">
 <!ENTITY zotero.item.deletePermanently "Изтриване окончателно...">
 
diff --git a/chrome/locale/bg-BG/zotero/zotero.properties b/chrome/locale/bg-BG/zotero/zotero.properties
index bb1e56e138..5cef59767f 100644
--- a/chrome/locale/bg-BG/zotero/zotero.properties
+++ b/chrome/locale/bg-BG/zotero/zotero.properties
@@ -417,6 +417,10 @@ pane.item.notes.ignoreMissingImage=Some note images are missing and cannot be co
 pane.item.attachments.rename.title=Ново заглавие:
 pane.item.attachments.rename.renameAssociatedFile=Преименува приложеният файл
 pane.item.attachments.rename.error=Възникна грешка при преименуването на файла.
+pane.item.attachments.rename.confirmExtChange.text1=Are you sure you want to change the file extension from “%S” to “%S”?
+pane.item.attachments.rename.confirmExtChange.text2=If you change the extension, the file may open with a different application outside of %S.
+pane.item.attachments.rename.confirmExtChange.keep=Keep %S
+pane.item.attachments.rename.confirmExtChange.change=Use %S
 pane.item.attachments.fileNotFound.title=Файлът не е намерен
 pane.item.attachments.fileNotFound.text1=The attached file could not be found.
 pane.item.attachments.fileNotFound.text1.path=The attached file could not be found at the following path:
@@ -448,7 +452,6 @@ pane.item.tags.icon.user=Отметки добавени от потребите
 pane.item.tags.icon.automatic=Автоматично добавени отметки
 pane.item.tags.removeAll=Remove all tags from this item?
 pane.item.parentItem=Parent Item:
-pane.item.viewOnline.tooltip=Go to this item online
 
 pane.context.noParent=No parent item
 pane.context.itemNotes=Item Notes
@@ -922,6 +925,8 @@ integration.removeBibEntry.body=Are you sure you want to omit it from your bibli
 
 integration.cited=Cited
 integration.cited.loading=Loading Cited Items…
+integration.openTabs=Open Documents
+integration.selectedItems=Selected Items
 integration.ibid=ibid
 integration.emptyCitationWarning.title=Празен цитат
 integration.emptyCitationWarning.body=Цитатът който сте избрали ще бъден празен, след като се форматира според настоящият стил. Сигурни ли сте, че искате да го добавите?
diff --git a/chrome/locale/br/zotero/zotero.dtd b/chrome/locale/br/zotero/zotero.dtd
index a16cdaee2d..2600c3dc57 100644
--- a/chrome/locale/br/zotero/zotero.dtd
+++ b/chrome/locale/br/zotero/zotero.dtd
@@ -111,7 +111,6 @@
 <!ENTITY zotero.item.textTransform.sentencecase "Lizherenn gentañ ar frazenn e pennlizherenn">
 <!ENTITY zotero.item.creatorTransform.nameSwap "Swap First/Last">
 <!ENTITY zotero.item.creatorTransform.fixCase "Fix Case">
-<!ENTITY zotero.item.viewOnline "Diskouez enlinenn">
 <!ENTITY zotero.item.copyAsURL "Eilañ evel URL">
 <!ENTITY zotero.item.deletePermanently "Dilemel da virviken...">
 
diff --git a/chrome/locale/br/zotero/zotero.properties b/chrome/locale/br/zotero/zotero.properties
index 898489320a..e656390a3b 100644
--- a/chrome/locale/br/zotero/zotero.properties
+++ b/chrome/locale/br/zotero/zotero.properties
@@ -417,6 +417,10 @@ pane.item.notes.ignoreMissingImage=Some note images are missing and cannot be co
 pane.item.attachments.rename.title=Titl nevez:
 pane.item.attachments.rename.renameAssociatedFile=Adenvel ar restr kevelet
 pane.item.attachments.rename.error=Ur fazi a zo c'hoarvezet en ur adenvel ar restr.
+pane.item.attachments.rename.confirmExtChange.text1=Are you sure you want to change the file extension from “%S” to “%S”?
+pane.item.attachments.rename.confirmExtChange.text2=If you change the extension, the file may open with a different application outside of %S.
+pane.item.attachments.rename.confirmExtChange.keep=Keep %S
+pane.item.attachments.rename.confirmExtChange.change=Use %S
 pane.item.attachments.fileNotFound.title=Restr digavus
 pane.item.attachments.fileNotFound.text1=N'heller ket kavout ar restr-stag.
 pane.item.attachments.fileNotFound.text1.path=N'eo ket bet posupl kavout ar restr-stag d'an hent da-heul:
@@ -448,7 +452,6 @@ pane.item.tags.icon.user=Baliz ouzhpennet gant an implijer
 pane.item.tags.icon.automatic=Baliz em-ouzhpennet
 pane.item.tags.removeAll=Dilemel an holl valizoù diwar an elfenn-mañ?
 pane.item.parentItem=Elfenn kar:
-pane.item.viewOnline.tooltip=Mont d'an elfenn-mañ enlinenn
 
 pane.context.noParent=Elfenn kar ebet
 pane.context.itemNotes=Notennoù elfenn
@@ -922,6 +925,8 @@ integration.removeBibEntry.body=Ha fellout a ra deoc'h leuskel anezhañ e-maez h
 
 integration.cited=Arroudennet
 integration.cited.loading=O kargañ an elfennoù arroudennet...
+integration.openTabs=Open Documents
+integration.selectedItems=Selected Items
 integration.ibid=ibid
 integration.emptyCitationWarning.title=Arroudenn wenn
 integration.emptyCitationWarning.body=An arroudenn spisaet ganeoc'h a vo goullo gant ar stil diuzet er mare-mañ. Ha sur oc'h e fell deoc'h ouzhpennañ anezhañ?
diff --git a/chrome/locale/ca-AD/zotero/zotero.dtd b/chrome/locale/ca-AD/zotero/zotero.dtd
index 756dcc3e61..1cb44ab96b 100644
--- a/chrome/locale/ca-AD/zotero/zotero.dtd
+++ b/chrome/locale/ca-AD/zotero/zotero.dtd
@@ -111,7 +111,6 @@
 <!ENTITY zotero.item.textTransform.sentencecase "Majúscules o minúscules de la frase">
 <!ENTITY zotero.item.creatorTransform.nameSwap "Intercanvia primer/últim">
 <!ENTITY zotero.item.creatorTransform.fixCase "Arregla majúscules/minúscules">
-<!ENTITY zotero.item.viewOnline "Mira en línia">
 <!ENTITY zotero.item.copyAsURL "Copia com a URL">
 <!ENTITY zotero.item.deletePermanently "Elimina permanentment…">
 
diff --git a/chrome/locale/ca-AD/zotero/zotero.properties b/chrome/locale/ca-AD/zotero/zotero.properties
index d551f74f14..c5c5cd3f01 100644
--- a/chrome/locale/ca-AD/zotero/zotero.properties
+++ b/chrome/locale/ca-AD/zotero/zotero.properties
@@ -417,6 +417,10 @@ pane.item.notes.ignoreMissingImage=Falten imatges de notes i no poden copiar-se.
 pane.item.attachments.rename.title=Nou títol:
 pane.item.attachments.rename.renameAssociatedFile=Canvia el nom del fitxer associat
 pane.item.attachments.rename.error=S'ha produït un error quan es canviava el nom del fitxer.
+pane.item.attachments.rename.confirmExtChange.text1=Are you sure you want to change the file extension from “%S” to “%S”?
+pane.item.attachments.rename.confirmExtChange.text2=If you change the extension, the file may open with a different application outside of %S.
+pane.item.attachments.rename.confirmExtChange.keep=Keep %S
+pane.item.attachments.rename.confirmExtChange.change=Use %S
 pane.item.attachments.fileNotFound.title=No s'ha trobat el fitxer
 pane.item.attachments.fileNotFound.text1=No s'ha pogut trobar el fitxer adjunt.
 pane.item.attachments.fileNotFound.text1.path=No s'ha pogut trobar el fitxer adjunt en el camí següent:
@@ -448,7 +452,6 @@ pane.item.tags.icon.user=Etiqueta afegida per l'usuari
 pane.item.tags.icon.automatic=Etiqueta afegida automàticament
 pane.item.tags.removeAll=Voleu suprimir totes les etiquetes d'aquest element?
 pane.item.parentItem=Element ascendent
-pane.item.viewOnline.tooltip=Vés a aquest element en línia
 
 pane.context.noParent=No hi ha cap element pare
 pane.context.itemNotes=Notes dels elements
@@ -922,6 +925,8 @@ integration.removeBibEntry.body=Segur que la voleu ometre a la vostra bibliograf
 
 integration.cited=Citades
 integration.cited.loading=Carregant els elements citats...
+integration.openTabs=Open Documents
+integration.selectedItems=Selected Items
 integration.ibid=ibídem
 integration.emptyCitationWarning.title=Cita en blanc
 integration.emptyCitationWarning.body=La cita s'ha especificat estaria buida en l'estil seleccionat. Segur que la voleu afegir?
diff --git a/chrome/locale/cs-CZ/zotero/zotero.dtd b/chrome/locale/cs-CZ/zotero/zotero.dtd
index 1fb1906dfe..02dd2ebdd4 100644
--- a/chrome/locale/cs-CZ/zotero/zotero.dtd
+++ b/chrome/locale/cs-CZ/zotero/zotero.dtd
@@ -111,7 +111,6 @@
 <!ENTITY zotero.item.textTransform.sentencecase "Velké první písmeno">
 <!ENTITY zotero.item.creatorTransform.nameSwap "Swap First/Last">
 <!ENTITY zotero.item.creatorTransform.fixCase "Fix Case">
-<!ENTITY zotero.item.viewOnline "Zobrazit online">
 <!ENTITY zotero.item.copyAsURL "Kopírovat jako URL">
 <!ENTITY zotero.item.deletePermanently "Definitivně smazat...">
 
diff --git a/chrome/locale/cs-CZ/zotero/zotero.properties b/chrome/locale/cs-CZ/zotero/zotero.properties
index cd0c193cc6..9e7f104223 100644
--- a/chrome/locale/cs-CZ/zotero/zotero.properties
+++ b/chrome/locale/cs-CZ/zotero/zotero.properties
@@ -417,6 +417,10 @@ pane.item.notes.ignoreMissingImage=Některé obrázky chybí a nemohou být zkop
 pane.item.attachments.rename.title=Nový název:
 pane.item.attachments.rename.renameAssociatedFile=Přejmenovat asociovaný soubor
 pane.item.attachments.rename.error=Během přejmenování souboru nastala chyba.
+pane.item.attachments.rename.confirmExtChange.text1=Are you sure you want to change the file extension from “%S” to “%S”?
+pane.item.attachments.rename.confirmExtChange.text2=If you change the extension, the file may open with a different application outside of %S.
+pane.item.attachments.rename.confirmExtChange.keep=Keep %S
+pane.item.attachments.rename.confirmExtChange.change=Use %S
 pane.item.attachments.fileNotFound.title=Soubor nebyl nalezen
 pane.item.attachments.fileNotFound.text1=Připojený soubor nelze nalézt.
 pane.item.attachments.fileNotFound.text1.path=Připojený soubor nebyl nalezen na následující cestě:
@@ -448,7 +452,6 @@ pane.item.tags.icon.user=Uživatelem přidaný štítek
 pane.item.tags.icon.automatic=Automaticky přidaný štítek
 pane.item.tags.removeAll=Smazat všechny štítky u této položky?
 pane.item.parentItem=Rodičovská položka:
-pane.item.viewOnline.tooltip=Přejít na tuto položku online
 
 pane.context.noParent=No parent item
 pane.context.itemNotes=Item Notes
@@ -922,6 +925,8 @@ integration.removeBibEntry.body=Opravdu to chcete vynechat z vaší bibliografie
 
 integration.cited=Citováno
 integration.cited.loading=Nahrávají se citované položky...
+integration.openTabs=Open Documents
+integration.selectedItems=Selected Items
 integration.ibid=tamtéž
 integration.emptyCitationWarning.title=Prázdná citace
 integration.emptyCitationWarning.body=Citace, kterou jste specifikovali, by byla podle aktuálně zvoleného stylu prázdná. Jste si jisti, že ji chcete přidat?
diff --git a/chrome/locale/da-DK/zotero/zotero.dtd b/chrome/locale/da-DK/zotero/zotero.dtd
index 2303277eb1..7a0fae29a7 100644
--- a/chrome/locale/da-DK/zotero/zotero.dtd
+++ b/chrome/locale/da-DK/zotero/zotero.dtd
@@ -111,7 +111,6 @@
 <!ENTITY zotero.item.textTransform.sentencecase "Første bogstav med stort">
 <!ENTITY zotero.item.creatorTransform.nameSwap "Swap First/Last">
 <!ENTITY zotero.item.creatorTransform.fixCase "Fix Case">
-<!ENTITY zotero.item.viewOnline "Vis online">
 <!ENTITY zotero.item.copyAsURL "Kopiér som URL">
 <!ENTITY zotero.item.deletePermanently "Slet permanent...">
 
diff --git a/chrome/locale/da-DK/zotero/zotero.properties b/chrome/locale/da-DK/zotero/zotero.properties
index 723ee9c8b5..7446167e7b 100644
--- a/chrome/locale/da-DK/zotero/zotero.properties
+++ b/chrome/locale/da-DK/zotero/zotero.properties
@@ -417,6 +417,10 @@ pane.item.notes.ignoreMissingImage=Some note images are missing and cannot be co
 pane.item.attachments.rename.title=Ny titel:
 pane.item.attachments.rename.renameAssociatedFile=Omdøb en tilhørende fil
 pane.item.attachments.rename.error=Der opstod en fejl under omdøbningen af filen.
+pane.item.attachments.rename.confirmExtChange.text1=Are you sure you want to change the file extension from “%S” to “%S”?
+pane.item.attachments.rename.confirmExtChange.text2=If you change the extension, the file may open with a different application outside of %S.
+pane.item.attachments.rename.confirmExtChange.keep=Keep %S
+pane.item.attachments.rename.confirmExtChange.change=Use %S
 pane.item.attachments.fileNotFound.title=Fil ikke fundet
 pane.item.attachments.fileNotFound.text1=Den vedhæftede fil kunne ikke findes.
 pane.item.attachments.fileNotFound.text1.path=The attached file could not be found at the following path:
@@ -448,7 +452,6 @@ pane.item.tags.icon.user=Mærke tilføjet af bruger
 pane.item.tags.icon.automatic=Automatisk tilføjet mærke
 pane.item.tags.removeAll=Fjern alle dette elements mærker?
 pane.item.parentItem=Overordnet element:
-pane.item.viewOnline.tooltip=Gå til dette element online
 
 pane.context.noParent=No parent item
 pane.context.itemNotes=Item Notes
@@ -922,6 +925,8 @@ integration.removeBibEntry.body=Er du sikker på, du vil udelade den fra din ref
 
 integration.cited=Henvist
 integration.cited.loading=Indlæser henviste elementer...
+integration.openTabs=Open Documents
+integration.selectedItems=Selected Items
 integration.ibid=ibid.
 integration.emptyCitationWarning.title=Tom henvisning
 integration.emptyCitationWarning.body=Den henvisning du har bedt om vil være tom i det aktuelle bibliografiske format. Er du sikker på at du vil tilføje den?
diff --git a/chrome/locale/de/zotero/zotero.dtd b/chrome/locale/de/zotero/zotero.dtd
index d093c401db..9ee1a44bc6 100644
--- a/chrome/locale/de/zotero/zotero.dtd
+++ b/chrome/locale/de/zotero/zotero.dtd
@@ -111,7 +111,6 @@
 <!ENTITY zotero.item.textTransform.sentencecase "englische Satz-Großschreibung">
 <!ENTITY zotero.item.creatorTransform.nameSwap "Vor-/Nachname tauschen">
 <!ENTITY zotero.item.creatorTransform.fixCase "Groß-/Kleinschreibung anpassen">
-<!ENTITY zotero.item.viewOnline "Online anzeigen">
 <!ENTITY zotero.item.copyAsURL "Als URL kopieren">
 <!ENTITY zotero.item.deletePermanently "Endgültig löschen...">
 
diff --git a/chrome/locale/de/zotero/zotero.properties b/chrome/locale/de/zotero/zotero.properties
index a1d3854237..3a26ef320e 100644
--- a/chrome/locale/de/zotero/zotero.properties
+++ b/chrome/locale/de/zotero/zotero.properties
@@ -417,6 +417,10 @@ pane.item.notes.ignoreMissingImage=Einige Notiz-Bilder fehlen und können nicht
 pane.item.attachments.rename.title=Neuer Titel:
 pane.item.attachments.rename.renameAssociatedFile=Zugehörige Datei umbenennen
 pane.item.attachments.rename.error=Beim Umbenennen der Datei trat ein Fehler auf.
+pane.item.attachments.rename.confirmExtChange.text1=Are you sure you want to change the file extension from “%S” to “%S”?
+pane.item.attachments.rename.confirmExtChange.text2=If you change the extension, the file may open with a different application outside of %S.
+pane.item.attachments.rename.confirmExtChange.keep=Keep %S
+pane.item.attachments.rename.confirmExtChange.change=Use %S
 pane.item.attachments.fileNotFound.title=Datei nicht gefunden
 pane.item.attachments.fileNotFound.text1=Die angehängte Datei konnte nicht gefunden werden.
 pane.item.attachments.fileNotFound.text1.path=Die angehängte Datei konnte im folgenden Pfad nicht gefunden werden:
@@ -448,7 +452,6 @@ pane.item.tags.icon.user=Vom Benutzer hinzugefügtes Tag
 pane.item.tags.icon.automatic=Automatisch hinzugefügtes Tag
 pane.item.tags.removeAll=Alle Tags von diesem Eintrag löschen?
 pane.item.parentItem=Übergeordneter Eintrag:
-pane.item.viewOnline.tooltip=Online zu diesem Eintrag gehen
 
 pane.context.noParent=Kein übergeordneter Eintrag
 pane.context.itemNotes=Eintragsnotizen
@@ -922,6 +925,8 @@ integration.removeBibEntry.body=Sind Sie sicher, dass Sie diese aus dem Literatu
 
 integration.cited=Zitiert
 integration.cited.loading=Lade zitierte Einträge
+integration.openTabs=Open Documents
+integration.selectedItems=Selected Items
 integration.ibid=ebd
 integration.emptyCitationWarning.title=Leere Zitation
 integration.emptyCitationWarning.body=Die ausgewählte Zitation wäre im aktuell ausgewählten Stil leer. Sind Sie sicher, dass Sie sie hinzufügen wollen?
diff --git a/chrome/locale/el-GR/zotero/zotero.dtd b/chrome/locale/el-GR/zotero/zotero.dtd
index 757b82c540..0226f2b25f 100644
--- a/chrome/locale/el-GR/zotero/zotero.dtd
+++ b/chrome/locale/el-GR/zotero/zotero.dtd
@@ -111,7 +111,6 @@
 <!ENTITY zotero.item.textTransform.sentencecase "Μορφή γραμμάτων πρότασης">
 <!ENTITY zotero.item.creatorTransform.nameSwap "Swap First/Last">
 <!ENTITY zotero.item.creatorTransform.fixCase "Fix Case">
-<!ENTITY zotero.item.viewOnline "Προβολή online">
 <!ENTITY zotero.item.copyAsURL "Αντιγραφή ως URL">
 <!ENTITY zotero.item.deletePermanently "Μόνιμη διαγραφή...;">
 
diff --git a/chrome/locale/el-GR/zotero/zotero.properties b/chrome/locale/el-GR/zotero/zotero.properties
index d2ef3f149d..0ca21cd802 100644
--- a/chrome/locale/el-GR/zotero/zotero.properties
+++ b/chrome/locale/el-GR/zotero/zotero.properties
@@ -417,6 +417,10 @@ pane.item.notes.ignoreMissingImage=Some note images are missing and cannot be co
 pane.item.attachments.rename.title=Νέος τίτλος:
 pane.item.attachments.rename.renameAssociatedFile=Μετονομασία συσχετισμένου αρχείου
 pane.item.attachments.rename.error=Παρουσιάστηκε σφάλμα κατά τη μετονομασία του αρχείου.
+pane.item.attachments.rename.confirmExtChange.text1=Are you sure you want to change the file extension from “%S” to “%S”?
+pane.item.attachments.rename.confirmExtChange.text2=If you change the extension, the file may open with a different application outside of %S.
+pane.item.attachments.rename.confirmExtChange.keep=Keep %S
+pane.item.attachments.rename.confirmExtChange.change=Use %S
 pane.item.attachments.fileNotFound.title=Το αρχείο δε βρέθηκε
 pane.item.attachments.fileNotFound.text1=Δεν ήταν δυνατή η εύρεση του συνημμένου αρχείου.
 pane.item.attachments.fileNotFound.text1.path=Το συνημμένο αρχείο δεν βρέθηκε στην ακόλουθη διαδρομή:
@@ -448,7 +452,6 @@ pane.item.tags.icon.user=Προσθήκη ετικέτας χρήστη
 pane.item.tags.icon.automatic=Αυτόματη προσθήκη ετικέτας
 pane.item.tags.removeAll=Κατάργηση όλων των ετικετών από αυτό το στοιχείο;
 pane.item.parentItem=Γονικό Στοιχείο:
-pane.item.viewOnline.tooltip=Μεταβείτε διαδικτυακά σε αυτό το αντικείμενο
 
 pane.context.noParent=No parent item
 pane.context.itemNotes=Item Notes
@@ -922,6 +925,8 @@ integration.removeBibEntry.body=Είστε βέβαιοι ότι θέλετε ν
 
 integration.cited=Cited
 integration.cited.loading=Φόρτωση στοιχείων Αναφοράς…
+integration.openTabs=Open Documents
+integration.selectedItems=Selected Items
 integration.ibid=όμοιο
 integration.emptyCitationWarning.title=Κενή Αναφορά
 integration.emptyCitationWarning.body=Η αναφορά που έχετε ορίσει θα είναι κενή στο τρέχον επιλεγμένο στυλ. Είστε βέβαιοι ότι θέλετε να την προσθέσετε;
diff --git a/chrome/locale/en-GB/zotero/zotero.dtd b/chrome/locale/en-GB/zotero/zotero.dtd
index 3e51065a6b..64f52b2839 100644
--- a/chrome/locale/en-GB/zotero/zotero.dtd
+++ b/chrome/locale/en-GB/zotero/zotero.dtd
@@ -111,7 +111,6 @@
 <!ENTITY zotero.item.textTransform.sentencecase "Sentence case">
 <!ENTITY zotero.item.creatorTransform.nameSwap "Swap First/Last">
 <!ENTITY zotero.item.creatorTransform.fixCase "Fix Case">
-<!ENTITY zotero.item.viewOnline "View Online">
 <!ENTITY zotero.item.copyAsURL "Copy as URL">
 <!ENTITY zotero.item.deletePermanently "Delete Permanently…">
 
diff --git a/chrome/locale/en-GB/zotero/zotero.properties b/chrome/locale/en-GB/zotero/zotero.properties
index e71340781a..08f832cc2f 100644
--- a/chrome/locale/en-GB/zotero/zotero.properties
+++ b/chrome/locale/en-GB/zotero/zotero.properties
@@ -417,6 +417,10 @@ pane.item.notes.ignoreMissingImage=Some note images are missing and cannot be co
 pane.item.attachments.rename.title=New title:
 pane.item.attachments.rename.renameAssociatedFile=Rename associated file
 pane.item.attachments.rename.error=An error occurred while renaming the file.
+pane.item.attachments.rename.confirmExtChange.text1=Are you sure you want to change the file extension from “%S” to “%S”?
+pane.item.attachments.rename.confirmExtChange.text2=If you change the extension, the file may open with a different application outside of %S.
+pane.item.attachments.rename.confirmExtChange.keep=Keep %S
+pane.item.attachments.rename.confirmExtChange.change=Use %S
 pane.item.attachments.fileNotFound.title=File Not Found
 pane.item.attachments.fileNotFound.text1=The attached file could not be found.
 pane.item.attachments.fileNotFound.text1.path=The attached file could not be found at the following path:
@@ -448,7 +452,6 @@ pane.item.tags.icon.user=User-added tag
 pane.item.tags.icon.automatic=Automatically added tag
 pane.item.tags.removeAll=Remove all tags from this item?
 pane.item.parentItem=Parent Item:
-pane.item.viewOnline.tooltip=Go to this item online
 
 pane.context.noParent=No parent item
 pane.context.itemNotes=Item Notes
@@ -922,6 +925,8 @@ integration.removeBibEntry.body=Are you sure you want to omit it from your bibli
 
 integration.cited=Cited
 integration.cited.loading=Loading Cited Items…
+integration.openTabs=Open Documents
+integration.selectedItems=Selected Items
 integration.ibid=ibid
 integration.emptyCitationWarning.title=Blank Citation
 integration.emptyCitationWarning.body=The citation you have specified would be empty in the currently selected style. Are you sure you want to add it?
diff --git a/chrome/locale/es-ES/zotero/zotero.dtd b/chrome/locale/es-ES/zotero/zotero.dtd
index b1d91d298f..b2d3fe25fb 100644
--- a/chrome/locale/es-ES/zotero/zotero.dtd
+++ b/chrome/locale/es-ES/zotero/zotero.dtd
@@ -111,7 +111,6 @@
 <!ENTITY zotero.item.textTransform.sentencecase "Mayúsculas de oración">
 <!ENTITY zotero.item.creatorTransform.nameSwap "Intercambiar primero/último">
 <!ENTITY zotero.item.creatorTransform.fixCase "Fijar mayúsculas/minúsculas">
-<!ENTITY zotero.item.viewOnline "Ver en línea">
 <!ENTITY zotero.item.copyAsURL "Copiar como URL">
 <!ENTITY zotero.item.deletePermanently "Eliminar permanentemente...">
 
diff --git a/chrome/locale/es-ES/zotero/zotero.properties b/chrome/locale/es-ES/zotero/zotero.properties
index 9a21fbccd0..7426e6a41e 100644
--- a/chrome/locale/es-ES/zotero/zotero.properties
+++ b/chrome/locale/es-ES/zotero/zotero.properties
@@ -417,6 +417,10 @@ pane.item.notes.ignoreMissingImage=Faltan algunas imágenes de notas y no se pue
 pane.item.attachments.rename.title=Nuevo título:
 pane.item.attachments.rename.renameAssociatedFile=Renombrar el archivo asociado
 pane.item.attachments.rename.error=Ha ocurrido un error al renombrar el archivo.
+pane.item.attachments.rename.confirmExtChange.text1=Are you sure you want to change the file extension from “%S” to “%S”?
+pane.item.attachments.rename.confirmExtChange.text2=If you change the extension, the file may open with a different application outside of %S.
+pane.item.attachments.rename.confirmExtChange.keep=Keep %S
+pane.item.attachments.rename.confirmExtChange.change=Use %S
 pane.item.attachments.fileNotFound.title=Archivo no encontrado
 pane.item.attachments.fileNotFound.text1=El archivo adjunto no puede ser encontrado.
 pane.item.attachments.fileNotFound.text1.path=El archivo adjunto no se puede encontrar en la siguiente ruta:
@@ -448,7 +452,6 @@ pane.item.tags.icon.user=Etiqueta añadida por el usuario
 pane.item.tags.icon.automatic=Etiqueta añadida automáticamente
 pane.item.tags.removeAll=¿Eliminar todas las etiquetas de este elemento?
 pane.item.parentItem=Elemento contenedor:
-pane.item.viewOnline.tooltip=Ir a este elemento en línea
 
 pane.context.noParent=Sin elemento contenedor
 pane.context.itemNotes=Notas del elemento
@@ -922,6 +925,8 @@ integration.removeBibEntry.body=¿Está seguro de que quiere omitirlo de su bibl
 
 integration.cited=Citado
 integration.cited.loading=Cargando elementos citados...
+integration.openTabs=Open Documents
+integration.selectedItems=Selected Items
 integration.ibid=ibid
 integration.emptyCitationWarning.title=Cita en blanco
 integration.emptyCitationWarning.body=La cita que ha especificado estaría vacía en el estilo seleccionado actualmente. ¿Está seguro de que quiere añadirla?
diff --git a/chrome/locale/et-EE/zotero/zotero.dtd b/chrome/locale/et-EE/zotero/zotero.dtd
index cbe1b28391..19c0c926d0 100644
--- a/chrome/locale/et-EE/zotero/zotero.dtd
+++ b/chrome/locale/et-EE/zotero/zotero.dtd
@@ -111,7 +111,6 @@
 <!ENTITY zotero.item.textTransform.sentencecase "Lause tõst">
 <!ENTITY zotero.item.creatorTransform.nameSwap "Swap First/Last">
 <!ENTITY zotero.item.creatorTransform.fixCase "Fix Case">
-<!ENTITY zotero.item.viewOnline "Online vaade">
 <!ENTITY zotero.item.copyAsURL "Kopeerida URL kujul">
 <!ENTITY zotero.item.deletePermanently "Delete Permanently…">
 
diff --git a/chrome/locale/et-EE/zotero/zotero.properties b/chrome/locale/et-EE/zotero/zotero.properties
index e14e68c6c5..0b09f1f12b 100644
--- a/chrome/locale/et-EE/zotero/zotero.properties
+++ b/chrome/locale/et-EE/zotero/zotero.properties
@@ -417,6 +417,10 @@ pane.item.notes.ignoreMissingImage=Some note images are missing and cannot be co
 pane.item.attachments.rename.title=Uus pealkiri:
 pane.item.attachments.rename.renameAssociatedFile=Seostatud faili ümbernimetamine
 pane.item.attachments.rename.error=Faili ümbernimetamisel tekkis viga.
+pane.item.attachments.rename.confirmExtChange.text1=Are you sure you want to change the file extension from “%S” to “%S”?
+pane.item.attachments.rename.confirmExtChange.text2=If you change the extension, the file may open with a different application outside of %S.
+pane.item.attachments.rename.confirmExtChange.keep=Keep %S
+pane.item.attachments.rename.confirmExtChange.change=Use %S
 pane.item.attachments.fileNotFound.title=Faili ei leitud
 pane.item.attachments.fileNotFound.text1=The attached file could not be found.
 pane.item.attachments.fileNotFound.text1.path=The attached file could not be found at the following path:
@@ -448,7 +452,6 @@ pane.item.tags.icon.user=Kasutaja poolt lisatud lipik
 pane.item.tags.icon.automatic=Automaatselt lisatud lipik
 pane.item.tags.removeAll=Remove all tags from this item?
 pane.item.parentItem=Ülemkirje:
-pane.item.viewOnline.tooltip=Selle kirje vaatamine võrgus
 
 pane.context.noParent=No parent item
 pane.context.itemNotes=Item Notes
@@ -922,6 +925,8 @@ integration.removeBibEntry.body=Olete kindel, et soovite neid bibliograafiast v
 
 integration.cited=Tsiteeritud
 integration.cited.loading=Tsiteeritud kirjete laadimine...
+integration.openTabs=Open Documents
+integration.selectedItems=Selected Items
 integration.ibid=ibid
 integration.emptyCitationWarning.title=Tühi viide.
 integration.emptyCitationWarning.body=Viide, mille valisite, oleks praeguse viitestiili järgi tühi. Olete kindel, et soovite seda lisada?
diff --git a/chrome/locale/eu-ES/zotero/zotero.dtd b/chrome/locale/eu-ES/zotero/zotero.dtd
index ba4e3b5666..ddae34f92b 100644
--- a/chrome/locale/eu-ES/zotero/zotero.dtd
+++ b/chrome/locale/eu-ES/zotero/zotero.dtd
@@ -111,7 +111,6 @@
 <!ENTITY zotero.item.textTransform.sentencecase "Lehen letra letra larriz">
 <!ENTITY zotero.item.creatorTransform.nameSwap "Trukatu lehena/azkena">
 <!ENTITY zotero.item.creatorTransform.fixCase "Konpondu letra-kaxa">
-<!ENTITY zotero.item.viewOnline "Linean ikusi">
 <!ENTITY zotero.item.copyAsURL "Kopiatu URL gisa">
 <!ENTITY zotero.item.deletePermanently "Betirako ezabatu...">
 
diff --git a/chrome/locale/eu-ES/zotero/zotero.properties b/chrome/locale/eu-ES/zotero/zotero.properties
index 996b7fa65f..8e87cfafc4 100644
--- a/chrome/locale/eu-ES/zotero/zotero.properties
+++ b/chrome/locale/eu-ES/zotero/zotero.properties
@@ -417,6 +417,10 @@ pane.item.notes.ignoreMissingImage=Oharpen irudi batzuk ez dira aurkitzen eta ez
 pane.item.attachments.rename.title=Titulu berria:
 pane.item.attachments.rename.renameAssociatedFile=Aldatu fitxategi asoziatuaren izena
 pane.item.attachments.rename.error=Errore bat gertatu da izena aldatzekotan.
+pane.item.attachments.rename.confirmExtChange.text1=Are you sure you want to change the file extension from “%S” to “%S”?
+pane.item.attachments.rename.confirmExtChange.text2=If you change the extension, the file may open with a different application outside of %S.
+pane.item.attachments.rename.confirmExtChange.keep=Keep %S
+pane.item.attachments.rename.confirmExtChange.change=Use %S
 pane.item.attachments.fileNotFound.title=Fitxategia ez da aurkitu
 pane.item.attachments.fileNotFound.text1=Erantsitako fitxategia ez da aurkitu.
 pane.item.attachments.fileNotFound.text1.path=Erantsitako fitxategia ezin izan da aurkitu honako bide-izenean:
@@ -448,7 +452,6 @@ pane.item.tags.icon.user=Erabiltzaileak sortutako etiketa
 pane.item.tags.icon.automatic=Automatikoki gehitutako etiketa
 pane.item.tags.removeAll=Elementu honetatik etiketa guztiak ezabatu?
 pane.item.parentItem=Guraso elementua:
-pane.item.viewOnline.tooltip=Ikusi elementu hau linean
 
 pane.context.noParent=Ez du guraso elementurik
 pane.context.itemNotes=Elementuaren oharrak
@@ -922,6 +925,8 @@ integration.removeBibEntry.body=Ziur zaude hau zure liburutegitik alde batera ut
 
 integration.cited=Aipatua
 integration.cited.loading=Aipatutako elementuak kargatzen...
+integration.openTabs=Open Documents
+integration.selectedItems=Selected Items
 integration.ibid=ibid
 integration.emptyCitationWarning.title=Aipu hutsa
 integration.emptyCitationWarning.body=Zuk zehaztu duzun aipua hutsik geratuko litzateke hautatuta dagoen estiloaren arabera. Ziur zaude gehitu nahi duzula?
diff --git a/chrome/locale/fa/zotero/zotero.dtd b/chrome/locale/fa/zotero/zotero.dtd
index 7ac0fcfd49..4bc3f771fa 100644
--- a/chrome/locale/fa/zotero/zotero.dtd
+++ b/chrome/locale/fa/zotero/zotero.dtd
@@ -111,7 +111,6 @@
 <!ENTITY zotero.item.textTransform.sentencecase "Sentence case">
 <!ENTITY zotero.item.creatorTransform.nameSwap "Swap First/Last">
 <!ENTITY zotero.item.creatorTransform.fixCase "Fix Case">
-<!ENTITY zotero.item.viewOnline "نمایش نسخه برخط">
 <!ENTITY zotero.item.copyAsURL "Copy as URL">
 <!ENTITY zotero.item.deletePermanently "Delete Permanently…">
 
diff --git a/chrome/locale/fa/zotero/zotero.properties b/chrome/locale/fa/zotero/zotero.properties
index 35f59105fb..93e1c0dccf 100644
--- a/chrome/locale/fa/zotero/zotero.properties
+++ b/chrome/locale/fa/zotero/zotero.properties
@@ -417,6 +417,10 @@ pane.item.notes.ignoreMissingImage=Some note images are missing and cannot be co
 pane.item.attachments.rename.title=عنوان جدید:
 pane.item.attachments.rename.renameAssociatedFile=تغییر نام پرونده وابسته
 pane.item.attachments.rename.error=در حین تغییر نام پرونده خطایی رخ داد
+pane.item.attachments.rename.confirmExtChange.text1=Are you sure you want to change the file extension from “%S” to “%S”?
+pane.item.attachments.rename.confirmExtChange.text2=If you change the extension, the file may open with a different application outside of %S.
+pane.item.attachments.rename.confirmExtChange.keep=Keep %S
+pane.item.attachments.rename.confirmExtChange.change=Use %S
 pane.item.attachments.fileNotFound.title=پرونده پیدا نشد
 pane.item.attachments.fileNotFound.text1=The attached file could not be found.
 pane.item.attachments.fileNotFound.text1.path=The attached file could not be found at the following path:
@@ -448,7 +452,6 @@ pane.item.tags.icon.user=برچسب وارد شده توسط کاربر
 pane.item.tags.icon.automatic=برچسب افزوده شده به صورت خودکار
 pane.item.tags.removeAll=Remove all tags from this item?
 pane.item.parentItem=آیتم مادر:
-pane.item.viewOnline.tooltip=رفتن به نسخه برخط این آیتم
 
 pane.context.noParent=No parent item
 pane.context.itemNotes=Item Notes
@@ -922,6 +925,8 @@ integration.removeBibEntry.body=آیا واقعا می‌خواهید آن را
 
 integration.cited=Cited
 integration.cited.loading=Loading Cited Items…
+integration.openTabs=Open Documents
+integration.selectedItems=Selected Items
 integration.ibid=همان
 integration.emptyCitationWarning.title=یادکرد خالی
 integration.emptyCitationWarning.body=یادکرد تعیین شده در شیوه فعلی خالی خواهد بود. آیا واقعا می‌خواهید آن را بیفزایید؟
diff --git a/chrome/locale/fi-FI/zotero/zotero.dtd b/chrome/locale/fi-FI/zotero/zotero.dtd
index 80cb08631a..ad546a7680 100644
--- a/chrome/locale/fi-FI/zotero/zotero.dtd
+++ b/chrome/locale/fi-FI/zotero/zotero.dtd
@@ -111,7 +111,6 @@
 <!ENTITY zotero.item.textTransform.sentencecase "Lauseen aakkoslaji">
 <!ENTITY zotero.item.creatorTransform.nameSwap "Vaihda Etu/Suku">
 <!ENTITY zotero.item.creatorTransform.fixCase "Korjaa aakkoslaji">
-<!ENTITY zotero.item.viewOnline "Katso verkossa">
 <!ENTITY zotero.item.copyAsURL "Kopioi URL-osoitteena">
 <!ENTITY zotero.item.deletePermanently "Poista lopullisesti...">
 
diff --git a/chrome/locale/fi-FI/zotero/zotero.properties b/chrome/locale/fi-FI/zotero/zotero.properties
index 0e65bb6a99..64f14674ab 100644
--- a/chrome/locale/fi-FI/zotero/zotero.properties
+++ b/chrome/locale/fi-FI/zotero/zotero.properties
@@ -417,6 +417,10 @@ pane.item.notes.ignoreMissingImage=Osa muistiinpanon kuvista puuttuu eikä niit
 pane.item.attachments.rename.title=Uusi otsikko:
 pane.item.attachments.rename.renameAssociatedFile=Nimeä liitetty tiedosto uudelleen
 pane.item.attachments.rename.error=Virhe nimettäessä tiedostoa uudelleen.
+pane.item.attachments.rename.confirmExtChange.text1=Are you sure you want to change the file extension from “%S” to “%S”?
+pane.item.attachments.rename.confirmExtChange.text2=If you change the extension, the file may open with a different application outside of %S.
+pane.item.attachments.rename.confirmExtChange.keep=Keep %S
+pane.item.attachments.rename.confirmExtChange.change=Use %S
 pane.item.attachments.fileNotFound.title=Tiedostoa ei löydy
 pane.item.attachments.fileNotFound.text1=Liitetiedostoa ei löytynyt.
 pane.item.attachments.fileNotFound.text1.path=Liitetiedostoa ei löydy seuraavasta hakemistosta:
@@ -448,7 +452,6 @@ pane.item.tags.icon.user=Käyttäjän lisäämä merkki
 pane.item.tags.icon.automatic=Automaattisesti lisätty merkki
 pane.item.tags.removeAll=Poista kaikki avainsanat tältä nimikkeeltä?
 pane.item.parentItem=Ylänimike:
-pane.item.viewOnline.tooltip=Näytä nimike verkossa
 
 pane.context.noParent=Ei ylänimikettä
 pane.context.itemNotes=Nimikkeen muistiinpanot
@@ -922,6 +925,8 @@ integration.removeBibEntry.body=Haluatko varmasti jättää sen pois lähdeluett
 
 integration.cited=siteerattu
 integration.cited.loading=Ladataan siteerattuja nimikkeitä...
+integration.openTabs=Open Documents
+integration.selectedItems=Selected Items
 integration.ibid=mt
 integration.emptyCitationWarning.title=Tyhjä viite
 integration.emptyCitationWarning.body=Määrittämäsi viite olisi tyhjä valitussa tyylissä. Haluatko varmasti lisätä sen?
diff --git a/chrome/locale/fr-FR/zotero/zotero.dtd b/chrome/locale/fr-FR/zotero/zotero.dtd
index b4eb1362ab..63fbacab76 100644
--- a/chrome/locale/fr-FR/zotero/zotero.dtd
+++ b/chrome/locale/fr-FR/zotero/zotero.dtd
@@ -111,7 +111,6 @@
 <!ENTITY zotero.item.textTransform.sentencecase "Lettre capitale en début de phrase">
 <!ENTITY zotero.item.creatorTransform.nameSwap "Inverser prénom/nom">
 <!ENTITY zotero.item.creatorTransform.fixCase "Corriger la casse">
-<!ENTITY zotero.item.viewOnline "Afficher en ligne">
 <!ENTITY zotero.item.copyAsURL "Copier comme un lien">
 <!ENTITY zotero.item.deletePermanently "Supprimer définitivement…">
 
diff --git a/chrome/locale/fr-FR/zotero/zotero.properties b/chrome/locale/fr-FR/zotero/zotero.properties
index 57212a6348..ba7082bb9a 100644
--- a/chrome/locale/fr-FR/zotero/zotero.properties
+++ b/chrome/locale/fr-FR/zotero/zotero.properties
@@ -417,6 +417,10 @@ pane.item.notes.ignoreMissingImage=Certaines images des notes sont manquantes et
 pane.item.attachments.rename.title=Nouveau titre :
 pane.item.attachments.rename.renameAssociatedFile=Renommer le fichier associé
 pane.item.attachments.rename.error=Une erreur est survenue lors du renommage du fichier.
+pane.item.attachments.rename.confirmExtChange.text1=Are you sure you want to change the file extension from “%S” to “%S”?
+pane.item.attachments.rename.confirmExtChange.text2=If you change the extension, the file may open with a different application outside of %S.
+pane.item.attachments.rename.confirmExtChange.keep=Keep %S
+pane.item.attachments.rename.confirmExtChange.change=Use %S
 pane.item.attachments.fileNotFound.title=Fichier introuvable
 pane.item.attachments.fileNotFound.text1=Le fichier joint n'a pu être trouvé.
 pane.item.attachments.fileNotFound.text1.path=Le fichier joint n'a pas pu être trouvé au chemin suivant :
@@ -448,7 +452,6 @@ pane.item.tags.icon.user=Marqueur ajouté par l'utilisateur
 pane.item.tags.icon.automatic=Marqueur ajouté automatiquement
 pane.item.tags.removeAll=Supprimer tous les marqueurs de ce document ?
 pane.item.parentItem=Document parent :
-pane.item.viewOnline.tooltip=Aller à ce document en ligne
 
 pane.context.noParent=Pas de document parent
 pane.context.itemNotes=Notes du document
@@ -922,6 +925,8 @@ integration.removeBibEntry.body=Voulez-vous vraiment l'omettre de votre bibliogr
 
 integration.cited=Cité
 integration.cited.loading=Chargement des références citées en cours…
+integration.openTabs=Open Documents
+integration.selectedItems=Selected Items
 integration.ibid=ibid
 integration.emptyCitationWarning.title=Citation vierge
 integration.emptyCitationWarning.body=La citation indiquée serait vide dans le style actuellement sélectionné. Voulez-vous vraiment l'ajouter ?
diff --git a/chrome/locale/gl-ES/zotero/zotero.dtd b/chrome/locale/gl-ES/zotero/zotero.dtd
index 07f17b8aa6..eb06d48345 100644
--- a/chrome/locale/gl-ES/zotero/zotero.dtd
+++ b/chrome/locale/gl-ES/zotero/zotero.dtd
@@ -111,7 +111,6 @@
 <!ENTITY zotero.item.textTransform.sentencecase "Maiúsculas comezando cada oración">
 <!ENTITY zotero.item.creatorTransform.nameSwap "Trocar Nome/Apelidos">
 <!ENTITY zotero.item.creatorTransform.fixCase "Fixar maiúsculas">
-<!ENTITY zotero.item.viewOnline "Ver en liña">
 <!ENTITY zotero.item.copyAsURL "Gardar como URL">
 <!ENTITY zotero.item.deletePermanently "Eliminar ao completo...">
 
diff --git a/chrome/locale/gl-ES/zotero/zotero.properties b/chrome/locale/gl-ES/zotero/zotero.properties
index 845bbbb45c..ddb165af57 100644
--- a/chrome/locale/gl-ES/zotero/zotero.properties
+++ b/chrome/locale/gl-ES/zotero/zotero.properties
@@ -417,6 +417,10 @@ pane.item.notes.ignoreMissingImage=Faltan algunhas imaxes da nota e non se poden
 pane.item.attachments.rename.title=Novo título:
 pane.item.attachments.rename.renameAssociatedFile=Renomear o ficheiro asociado
 pane.item.attachments.rename.error=Erro ao cambiar o nome do ficheiro.
+pane.item.attachments.rename.confirmExtChange.text1=Are you sure you want to change the file extension from “%S” to “%S”?
+pane.item.attachments.rename.confirmExtChange.text2=If you change the extension, the file may open with a different application outside of %S.
+pane.item.attachments.rename.confirmExtChange.keep=Keep %S
+pane.item.attachments.rename.confirmExtChange.change=Use %S
 pane.item.attachments.fileNotFound.title=Non se atopa o ficheiro
 pane.item.attachments.fileNotFound.text1=Non se atopa o ficheiro anexo.
 pane.item.attachments.fileNotFound.text1.path=Non se atopou o ficheiro anexo nesta dirección:
@@ -448,7 +452,6 @@ pane.item.tags.icon.user=Etiqueta engadida polo usuario
 pane.item.tags.icon.automatic=Etiqueta engadida automaticamente
 pane.item.tags.removeAll=Retirar todas as etiquetas desde elemento?
 pane.item.parentItem=Elemento parental:
-pane.item.viewOnline.tooltip=Ir a este elemento en liña
 
 pane.context.noParent=Ten elemento parental
 pane.context.itemNotes=Elemento notas
@@ -922,6 +925,8 @@ integration.removeBibEntry.body=Seguro que queres omitilas da bibliografía?
 
 integration.cited=Citado
 integration.cited.loading=Cargando os elementos citados...
+integration.openTabs=Open Documents
+integration.selectedItems=Selected Items
 integration.ibid=ibid
 integration.emptyCitationWarning.title=Cita en branco
 integration.emptyCitationWarning.body=A cita indicada quedaría baleira empregando o estilo que está seleccionado agora mesmo. Seguro que queres engadila?
diff --git a/chrome/locale/he-IL/zotero/zotero.dtd b/chrome/locale/he-IL/zotero/zotero.dtd
index 3b717be127..1f83175a12 100644
--- a/chrome/locale/he-IL/zotero/zotero.dtd
+++ b/chrome/locale/he-IL/zotero/zotero.dtd
@@ -111,7 +111,6 @@
 <!ENTITY zotero.item.textTransform.sentencecase "מצב רישיות משפט">
 <!ENTITY zotero.item.creatorTransform.nameSwap "Swap First/Last">
 <!ENTITY zotero.item.creatorTransform.fixCase "Fix Case">
-<!ENTITY zotero.item.viewOnline "הצגה באינטרנט">
 <!ENTITY zotero.item.copyAsURL "העתקה ככתובת">
 <!ENTITY zotero.item.deletePermanently "מחיקה לצמיתות…">
 
diff --git a/chrome/locale/he-IL/zotero/zotero.properties b/chrome/locale/he-IL/zotero/zotero.properties
index 38ccfe9eb2..c3fbbf6fc7 100644
--- a/chrome/locale/he-IL/zotero/zotero.properties
+++ b/chrome/locale/he-IL/zotero/zotero.properties
@@ -417,6 +417,10 @@ pane.item.notes.ignoreMissingImage=Some note images are missing and cannot be co
 pane.item.attachments.rename.title=כותרת חדשה:
 pane.item.attachments.rename.renameAssociatedFile=שינוי שם לקובץ משויך
 pane.item.attachments.rename.error=אירעה שגיאה בשינוי שם הקובץ.
+pane.item.attachments.rename.confirmExtChange.text1=Are you sure you want to change the file extension from “%S” to “%S”?
+pane.item.attachments.rename.confirmExtChange.text2=If you change the extension, the file may open with a different application outside of %S.
+pane.item.attachments.rename.confirmExtChange.keep=Keep %S
+pane.item.attachments.rename.confirmExtChange.change=Use %S
 pane.item.attachments.fileNotFound.title=קובץ לא נמצא
 pane.item.attachments.fileNotFound.text1=The attached file could not be found.
 pane.item.attachments.fileNotFound.text1.path=The attached file could not be found at the following path:
@@ -448,7 +452,6 @@ pane.item.tags.icon.user=תגית משתמש
 pane.item.tags.icon.automatic=תגית שנוספה אוטומטית
 pane.item.tags.removeAll=להסיר את כל התגיות מהפריט הזה?
 pane.item.parentItem=פריט הורה:
-pane.item.viewOnline.tooltip=מעבר לפריט הזה באינטרנט
 
 pane.context.noParent=אין פריט הורה
 pane.context.itemNotes=הערות פריט
@@ -922,6 +925,8 @@ integration.removeBibEntry.body=Are you sure you want to omit it from your bibli
 
 integration.cited=Cited
 integration.cited.loading=Loading Cited Items…
+integration.openTabs=Open Documents
+integration.selectedItems=Selected Items
 integration.ibid=ibid
 integration.emptyCitationWarning.title=ציטוט ריק
 integration.emptyCitationWarning.body=The citation you have specified would be empty in the currently selected style. Are you sure you want to add it?
diff --git a/chrome/locale/hr-HR/zotero/zotero.dtd b/chrome/locale/hr-HR/zotero/zotero.dtd
index 6da5b6920d..98d255e975 100644
--- a/chrome/locale/hr-HR/zotero/zotero.dtd
+++ b/chrome/locale/hr-HR/zotero/zotero.dtd
@@ -111,7 +111,6 @@
 <!ENTITY zotero.item.textTransform.sentencecase "Sentence case">
 <!ENTITY zotero.item.creatorTransform.nameSwap "Swap First/Last">
 <!ENTITY zotero.item.creatorTransform.fixCase "Fix Case">
-<!ENTITY zotero.item.viewOnline "View Online">
 <!ENTITY zotero.item.copyAsURL "Copy as URL">
 <!ENTITY zotero.item.deletePermanently "Delete Permanently…">
 
diff --git a/chrome/locale/hr-HR/zotero/zotero.properties b/chrome/locale/hr-HR/zotero/zotero.properties
index d05ac05aef..e78089306a 100644
--- a/chrome/locale/hr-HR/zotero/zotero.properties
+++ b/chrome/locale/hr-HR/zotero/zotero.properties
@@ -417,6 +417,10 @@ pane.item.notes.ignoreMissingImage=Some note images are missing and cannot be co
 pane.item.attachments.rename.title=New title:
 pane.item.attachments.rename.renameAssociatedFile=Rename associated file
 pane.item.attachments.rename.error=An error occurred while renaming the file.
+pane.item.attachments.rename.confirmExtChange.text1=Are you sure you want to change the file extension from “%S” to “%S”?
+pane.item.attachments.rename.confirmExtChange.text2=If you change the extension, the file may open with a different application outside of %S.
+pane.item.attachments.rename.confirmExtChange.keep=Keep %S
+pane.item.attachments.rename.confirmExtChange.change=Use %S
 pane.item.attachments.fileNotFound.title=File Not Found
 pane.item.attachments.fileNotFound.text1=The attached file could not be found.
 pane.item.attachments.fileNotFound.text1.path=The attached file could not be found at the following path:
@@ -448,7 +452,6 @@ pane.item.tags.icon.user=User-added tag
 pane.item.tags.icon.automatic=Automatically added tag
 pane.item.tags.removeAll=Remove all tags from this item?
 pane.item.parentItem=Parent Item:
-pane.item.viewOnline.tooltip=Go to this item online
 
 pane.context.noParent=No parent item
 pane.context.itemNotes=Item Notes
@@ -922,6 +925,8 @@ integration.removeBibEntry.body=Are you sure you want to omit it from your bibli
 
 integration.cited=Cited
 integration.cited.loading=Loading Cited Items…
+integration.openTabs=Open Documents
+integration.selectedItems=Selected Items
 integration.ibid=ibid
 integration.emptyCitationWarning.title=Blank Citation
 integration.emptyCitationWarning.body=The citation you have specified would be empty in the currently selected style. Are you sure you want to add it?
diff --git a/chrome/locale/hu-HU/zotero/zotero.dtd b/chrome/locale/hu-HU/zotero/zotero.dtd
index 7273e9b9ec..3449ecb219 100644
--- a/chrome/locale/hu-HU/zotero/zotero.dtd
+++ b/chrome/locale/hu-HU/zotero/zotero.dtd
@@ -111,7 +111,6 @@
 <!ENTITY zotero.item.textTransform.sentencecase "Mondatkezdő">
 <!ENTITY zotero.item.creatorTransform.nameSwap "Keresztnév/Vezetéknév felcserélése">
 <!ENTITY zotero.item.creatorTransform.fixCase "Fix Case">
-<!ENTITY zotero.item.viewOnline "Online megtekintés">
 <!ENTITY zotero.item.copyAsURL "Másolás URL-ként">
 <!ENTITY zotero.item.deletePermanently "Végleges törlés…">
 
diff --git a/chrome/locale/hu-HU/zotero/zotero.properties b/chrome/locale/hu-HU/zotero/zotero.properties
index cc40ccb2b9..a10f3ee5d2 100644
--- a/chrome/locale/hu-HU/zotero/zotero.properties
+++ b/chrome/locale/hu-HU/zotero/zotero.properties
@@ -417,6 +417,10 @@ pane.item.notes.ignoreMissingImage=Néhány jegyzetkép hiányzik és nem másol
 pane.item.attachments.rename.title=Új cím
 pane.item.attachments.rename.renameAssociatedFile=Kapcsolódó fájl átnevezése
 pane.item.attachments.rename.error=Hiba a fájl átnevezése közben.
+pane.item.attachments.rename.confirmExtChange.text1=Are you sure you want to change the file extension from “%S” to “%S”?
+pane.item.attachments.rename.confirmExtChange.text2=If you change the extension, the file may open with a different application outside of %S.
+pane.item.attachments.rename.confirmExtChange.keep=Keep %S
+pane.item.attachments.rename.confirmExtChange.change=Use %S
 pane.item.attachments.fileNotFound.title=A fájl nem található
 pane.item.attachments.fileNotFound.text1=A csatolt fájl nem található.
 pane.item.attachments.fileNotFound.text1.path=A csatolt fájl nem található a következő útvonalon:
@@ -448,7 +452,6 @@ pane.item.tags.icon.user=Felhasználó által adott címke
 pane.item.tags.icon.automatic=Automatikus címke
 pane.item.tags.removeAll=Eltávolítja az összes címkét ebből az elemből?
 pane.item.parentItem=Szülő elem
-pane.item.viewOnline.tooltip=Az elem elérése online
 
 pane.context.noParent=Nincs szülő elem
 pane.context.itemNotes=Elem jegyzetei
@@ -922,6 +925,8 @@ integration.removeBibEntry.body=Biztos, hogy kihagyja ezt a bibliográfiából?
 
 integration.cited=Hivatkozva
 integration.cited.loading=Hivatkozott elemek betöltése…
+integration.openTabs=Open Documents
+integration.selectedItems=Selected Items
 integration.ibid=uo.
 integration.emptyCitationWarning.title=Üres hivatkozás
 integration.emptyCitationWarning.body=A kívánt hivatkozás üres a jelenlegi stílusban. Biztos, hogy hozzá akarja adni?
diff --git a/chrome/locale/id-ID/zotero/zotero.dtd b/chrome/locale/id-ID/zotero/zotero.dtd
index d1608d2ccf..40741a6dcc 100644
--- a/chrome/locale/id-ID/zotero/zotero.dtd
+++ b/chrome/locale/id-ID/zotero/zotero.dtd
@@ -111,7 +111,6 @@
 <!ENTITY zotero.item.textTransform.sentencecase "Sentence case">
 <!ENTITY zotero.item.creatorTransform.nameSwap "Swap First/Last">
 <!ENTITY zotero.item.creatorTransform.fixCase "Fix Case">
-<!ENTITY zotero.item.viewOnline "Lihat secaraDaring">
 <!ENTITY zotero.item.copyAsURL "Salin sebagai URL">
 <!ENTITY zotero.item.deletePermanently "Hapus secara permanen...">
 
diff --git a/chrome/locale/id-ID/zotero/zotero.properties b/chrome/locale/id-ID/zotero/zotero.properties
index b14280d311..1b62b1b4fa 100644
--- a/chrome/locale/id-ID/zotero/zotero.properties
+++ b/chrome/locale/id-ID/zotero/zotero.properties
@@ -417,6 +417,10 @@ pane.item.notes.ignoreMissingImage=Some note images are missing and cannot be co
 pane.item.attachments.rename.title=Judul baru:
 pane.item.attachments.rename.renameAssociatedFile=Namai ulang berkas yang terkait
 pane.item.attachments.rename.error=Terjadi kesalahan saat menamai ulang berkas.
+pane.item.attachments.rename.confirmExtChange.text1=Are you sure you want to change the file extension from “%S” to “%S”?
+pane.item.attachments.rename.confirmExtChange.text2=If you change the extension, the file may open with a different application outside of %S.
+pane.item.attachments.rename.confirmExtChange.keep=Keep %S
+pane.item.attachments.rename.confirmExtChange.change=Use %S
 pane.item.attachments.fileNotFound.title=Berkas Tidak Ditemukan
 pane.item.attachments.fileNotFound.text1=The attached file could not be found.
 pane.item.attachments.fileNotFound.text1.path=The attached file could not be found at the following path:
@@ -448,7 +452,6 @@ pane.item.tags.icon.user=Tag yang ditambahkan pengguna
 pane.item.tags.icon.automatic=Tag yang ditambahkan secara automatis
 pane.item.tags.removeAll=Remove all tags from this item?
 pane.item.parentItem=Item Induk
-pane.item.viewOnline.tooltip=Pergi ke item ini secara daring
 
 pane.context.noParent=No parent item
 pane.context.itemNotes=Item Notes
@@ -922,6 +925,8 @@ integration.removeBibEntry.body=Apakah Anda ingin mengabaikannya dari bibliograf
 
 integration.cited=Dikutip
 integration.cited.loading=Memuat Item-item Terkutip...
+integration.openTabs=Open Documents
+integration.selectedItems=Selected Items
 integration.ibid=ibid
 integration.emptyCitationWarning.title=Sitasi Kosong
 integration.emptyCitationWarning.body=Sitasi yang telah Anda tentukan akan menjadi kosong di dalam gaya yang saat ini dipilih. Apakah Anda yakin ingin menambahkannya?
diff --git a/chrome/locale/is-IS/zotero/zotero.dtd b/chrome/locale/is-IS/zotero/zotero.dtd
index 07361b368b..8d917aa7f6 100644
--- a/chrome/locale/is-IS/zotero/zotero.dtd
+++ b/chrome/locale/is-IS/zotero/zotero.dtd
@@ -111,7 +111,6 @@
 <!ENTITY zotero.item.textTransform.sentencecase "Stafagerð setninga">
 <!ENTITY zotero.item.creatorTransform.nameSwap "Swap First/Last">
 <!ENTITY zotero.item.creatorTransform.fixCase "Fix Case">
-<!ENTITY zotero.item.viewOnline "Skoða nettengt">
 <!ENTITY zotero.item.copyAsURL "Afrita sem URL-slóð">
 <!ENTITY zotero.item.deletePermanently "Eyða endanlega…">
 
diff --git a/chrome/locale/is-IS/zotero/zotero.properties b/chrome/locale/is-IS/zotero/zotero.properties
index 5fb51049cf..00a5fbbd83 100644
--- a/chrome/locale/is-IS/zotero/zotero.properties
+++ b/chrome/locale/is-IS/zotero/zotero.properties
@@ -417,6 +417,10 @@ pane.item.notes.ignoreMissingImage=Some note images are missing and cannot be co
 pane.item.attachments.rename.title=Nýr titill:
 pane.item.attachments.rename.renameAssociatedFile=Endurnefna tengt skjal
 pane.item.attachments.rename.error=Villa kom upp við að endurnefna skjalið.
+pane.item.attachments.rename.confirmExtChange.text1=Are you sure you want to change the file extension from “%S” to “%S”?
+pane.item.attachments.rename.confirmExtChange.text2=If you change the extension, the file may open with a different application outside of %S.
+pane.item.attachments.rename.confirmExtChange.keep=Keep %S
+pane.item.attachments.rename.confirmExtChange.change=Use %S
 pane.item.attachments.fileNotFound.title=Skrá fannst ekki
 pane.item.attachments.fileNotFound.text1=Viðhengda skráin fannst ekki.
 pane.item.attachments.fileNotFound.text1.path=The attached file could not be found at the following path:
@@ -448,7 +452,6 @@ pane.item.tags.icon.user=Merki frá notanda
 pane.item.tags.icon.automatic=Sjálkfvirkt valið merki
 pane.item.tags.removeAll=Remove all tags from this item?
 pane.item.parentItem=Móðurfærsla:
-pane.item.viewOnline.tooltip=Fara á þessa færslu á netinu
 
 pane.context.noParent=No parent item
 pane.context.itemNotes=Item Notes
@@ -922,6 +925,8 @@ integration.removeBibEntry.body=Ertu viss um að þú viljir sleppa henni úr he
 
 integration.cited=Tilvitnað
 integration.cited.loading=Hleð inn tilvitnuðum færslum…
+integration.openTabs=Open Documents
+integration.selectedItems=Selected Items
 integration.ibid=ibid
 integration.emptyCitationWarning.title=Auð tilvitnun
 integration.emptyCitationWarning.body=Tilvitnunin sem þú hefur tilgreint yrði auð ef valinn stíll er notaður. Ertu viss um að þú viljir bæta henni við?
diff --git a/chrome/locale/it-IT/zotero/zotero.dtd b/chrome/locale/it-IT/zotero/zotero.dtd
index 9051687f98..1f7731af0a 100644
--- a/chrome/locale/it-IT/zotero/zotero.dtd
+++ b/chrome/locale/it-IT/zotero/zotero.dtd
@@ -111,7 +111,6 @@
 <!ENTITY zotero.item.textTransform.sentencecase "Maiuscola iniziale">
 <!ENTITY zotero.item.creatorTransform.nameSwap "Scambia Nome/Cognome">
 <!ENTITY zotero.item.creatorTransform.fixCase "Correggi maiuscole">
-<!ENTITY zotero.item.viewOnline "Visualizza online">
 <!ENTITY zotero.item.copyAsURL "Copia come URL">
 <!ENTITY zotero.item.deletePermanently "Elimina definitivamente…">
 
diff --git a/chrome/locale/it-IT/zotero/zotero.properties b/chrome/locale/it-IT/zotero/zotero.properties
index 2a3ec1dcfd..56a46b8566 100644
--- a/chrome/locale/it-IT/zotero/zotero.properties
+++ b/chrome/locale/it-IT/zotero/zotero.properties
@@ -417,6 +417,10 @@ pane.item.notes.ignoreMissingImage=Alcune immagini delle note sono mancanti e no
 pane.item.attachments.rename.title=Nuovo titolo:
 pane.item.attachments.rename.renameAssociatedFile=Rinomina file associato
 pane.item.attachments.rename.error=Si è verificato un errore nella rinominazione del file.
+pane.item.attachments.rename.confirmExtChange.text1=Are you sure you want to change the file extension from “%S” to “%S”?
+pane.item.attachments.rename.confirmExtChange.text2=If you change the extension, the file may open with a different application outside of %S.
+pane.item.attachments.rename.confirmExtChange.keep=Keep %S
+pane.item.attachments.rename.confirmExtChange.change=Use %S
 pane.item.attachments.fileNotFound.title=File non trovato
 pane.item.attachments.fileNotFound.text1=Impossibile trovare il file allegato.
 pane.item.attachments.fileNotFound.text1.path=Impossibile trovare il file allegato nel percorso:
@@ -448,7 +452,6 @@ pane.item.tags.icon.user=Tag aggiunto manualmente
 pane.item.tags.icon.automatic=Tag aggiunto automaticamente
 pane.item.tags.removeAll=Desideri eliminare tutti i tag dall'elemento?
 pane.item.parentItem=Elemento genitore:
-pane.item.viewOnline.tooltip=Visualizza questo elemento online
 
 pane.context.noParent=Nessun elemento genitore
 pane.context.itemNotes=Note dell'elemento
@@ -922,6 +925,8 @@ integration.removeBibEntry.body=Si è sicuri di volerlo omettere dalla bibliogra
 
 integration.cited=Citato
 integration.cited.loading=Caricamento degli elementi citati...
+integration.openTabs=Open Documents
+integration.selectedItems=Selected Items
 integration.ibid=ibid
 integration.emptyCitationWarning.title=Citazione vuota
 integration.emptyCitationWarning.body=La citazione selezionata risulterebbe vuota nello stile attualmente in uso. Si è certi di volerla aggiungere?
diff --git a/chrome/locale/ja-JP/zotero/zotero.dtd b/chrome/locale/ja-JP/zotero/zotero.dtd
index aaca4a597e..33ff7e8da5 100644
--- a/chrome/locale/ja-JP/zotero/zotero.dtd
+++ b/chrome/locale/ja-JP/zotero/zotero.dtd
@@ -111,7 +111,6 @@
 <!ENTITY zotero.item.textTransform.sentencecase "各文の先頭を大文字に">
 <!ENTITY zotero.item.creatorTransform.nameSwap "Swap First/Last">
 <!ENTITY zotero.item.creatorTransform.fixCase "Fix Case">
-<!ENTITY zotero.item.viewOnline "オンラインで閲覧する">
 <!ENTITY zotero.item.copyAsURL "URLとしてコピーする">
 <!ENTITY zotero.item.deletePermanently "永久に削除する...">
 
diff --git a/chrome/locale/ja-JP/zotero/zotero.properties b/chrome/locale/ja-JP/zotero/zotero.properties
index b20699c4ea..5632d6cc5a 100644
--- a/chrome/locale/ja-JP/zotero/zotero.properties
+++ b/chrome/locale/ja-JP/zotero/zotero.properties
@@ -417,6 +417,10 @@ pane.item.notes.ignoreMissingImage=一部のメモ画像が欠落しており、
 pane.item.attachments.rename.title=新しい題名:
 pane.item.attachments.rename.renameAssociatedFile=関連ファイル名を変更する
 pane.item.attachments.rename.error=ファイル名を変更中にエラーが発生しました。
+pane.item.attachments.rename.confirmExtChange.text1=Are you sure you want to change the file extension from “%S” to “%S”?
+pane.item.attachments.rename.confirmExtChange.text2=If you change the extension, the file may open with a different application outside of %S.
+pane.item.attachments.rename.confirmExtChange.keep=Keep %S
+pane.item.attachments.rename.confirmExtChange.change=Use %S
 pane.item.attachments.fileNotFound.title=ファイルが見つかりませんでした
 pane.item.attachments.fileNotFound.text1=添付ファイルが見つかりませんでした。
 pane.item.attachments.fileNotFound.text1.path=添付ファイルが次のパスで見つかりませんでした：
@@ -448,7 +452,6 @@ pane.item.tags.icon.user=ユーザの追加したタグ
 pane.item.tags.icon.automatic=自動的に追加されたタグ
 pane.item.tags.removeAll=このアイテムからすべてのタグを取り除きますか？
 pane.item.parentItem=親アイテム:
-pane.item.viewOnline.tooltip=オンラインでこのアイテムに移動
 
 pane.context.noParent=親アイテムなし
 pane.context.itemNotes=アイテムのメモ
@@ -922,6 +925,8 @@ integration.removeBibEntry.body=本当にこれを参考文献目録から取り
 
 integration.cited=引用済み
 integration.cited.loading=引用されたアイテムを読み込んでいます...
+integration.openTabs=Open Documents
+integration.selectedItems=Selected Items
 integration.ibid=ibid
 integration.emptyCitationWarning.title=空白の出典表記
 integration.emptyCitationWarning.body=現在選択中の引用スタイルでは、指定した出典表記は空白になってしまいます。本当にこれを追加してよろしいですか？
diff --git a/chrome/locale/km/zotero/zotero.dtd b/chrome/locale/km/zotero/zotero.dtd
index 9568247a24..e9d7d1c1e0 100644
--- a/chrome/locale/km/zotero/zotero.dtd
+++ b/chrome/locale/km/zotero/zotero.dtd
@@ -111,7 +111,6 @@
 <!ENTITY zotero.item.textTransform.sentencecase "ចំណងជើងអក្សរតូច">
 <!ENTITY zotero.item.creatorTransform.nameSwap "Swap First/Last">
 <!ENTITY zotero.item.creatorTransform.fixCase "Fix Case">
-<!ENTITY zotero.item.viewOnline "មើលគេហទំព័រ">
 <!ENTITY zotero.item.copyAsURL "Copy as URL">
 <!ENTITY zotero.item.deletePermanently "Delete Permanently…">
 
diff --git a/chrome/locale/km/zotero/zotero.properties b/chrome/locale/km/zotero/zotero.properties
index 3651a08551..2c6a86996f 100644
--- a/chrome/locale/km/zotero/zotero.properties
+++ b/chrome/locale/km/zotero/zotero.properties
@@ -417,6 +417,10 @@ pane.item.notes.ignoreMissingImage=Some note images are missing and cannot be co
 pane.item.attachments.rename.title=ចំណងជើងថ្មី:
 pane.item.attachments.rename.renameAssociatedFile=ប្តូរឈ្មោះឯកសារដែលពាក់ព័ន្ធ
 pane.item.attachments.rename.error=មានកំហុសកើតឡើងនៅពេលប្តូរឈ្មោះឯកសារនេះ។
+pane.item.attachments.rename.confirmExtChange.text1=Are you sure you want to change the file extension from “%S” to “%S”?
+pane.item.attachments.rename.confirmExtChange.text2=If you change the extension, the file may open with a different application outside of %S.
+pane.item.attachments.rename.confirmExtChange.keep=Keep %S
+pane.item.attachments.rename.confirmExtChange.change=Use %S
 pane.item.attachments.fileNotFound.title=ឯកសាររកមិនឃើញ
 pane.item.attachments.fileNotFound.text1=The attached file could not be found.
 pane.item.attachments.fileNotFound.text1.path=The attached file could not be found at the following path:
@@ -448,7 +452,6 @@ pane.item.tags.icon.user=ស្លាកភ្ជាប់អ្នកប្រ
 pane.item.tags.icon.automatic=ស្លាកភ្ជាប់ស្វ័យប្រវត្តិ
 pane.item.tags.removeAll=Remove all tags from this item?
 pane.item.parentItem=ឯកសារមេ:
-pane.item.viewOnline.tooltip=ចូលមើលឯកសារនេះនៅលើគេហទំព័រ
 
 pane.context.noParent=No parent item
 pane.context.itemNotes=Item Notes
@@ -922,6 +925,8 @@ integration.removeBibEntry.body=តើអ្នកចង់លុបចេញព
 
 integration.cited=ត្រូវបានយោង
 integration.cited.loading=កំពុងបង្ហាញបន្ទុកឯកសារត្រូវបានយោង…
+integration.openTabs=Open Documents
+integration.selectedItems=Selected Items
 integration.ibid=ដូចខាងលើ
 integration.emptyCitationWarning.title=គ្មានអាគតដ្ឋាន
 integration.emptyCitationWarning.body=អាគតដ្ឋានដែលអ្នកបានគូសបញ្ជាក់គឺអត់មាននៅក្នុងរចនាបថដែលបានជ្រើសរើស។ តើអ្នកចង់បន្ថែមវាទេ?
diff --git a/chrome/locale/ko-KR/zotero/zotero.dtd b/chrome/locale/ko-KR/zotero/zotero.dtd
index 027e17380f..d6fd63ef1b 100644
--- a/chrome/locale/ko-KR/zotero/zotero.dtd
+++ b/chrome/locale/ko-KR/zotero/zotero.dtd
@@ -111,7 +111,6 @@
 <!ENTITY zotero.item.textTransform.sentencecase "문장 첫머리는 대문자">
 <!ENTITY zotero.item.creatorTransform.nameSwap "Swap First/Last">
 <!ENTITY zotero.item.creatorTransform.fixCase "Fix Case">
-<!ENTITY zotero.item.viewOnline "온라인으로 보기">
 <!ENTITY zotero.item.copyAsURL "URL로 복사">
 <!ENTITY zotero.item.deletePermanently "완전히 삭제...">
 
diff --git a/chrome/locale/ko-KR/zotero/zotero.properties b/chrome/locale/ko-KR/zotero/zotero.properties
index 9d43da8c7e..801b313105 100644
--- a/chrome/locale/ko-KR/zotero/zotero.properties
+++ b/chrome/locale/ko-KR/zotero/zotero.properties
@@ -417,6 +417,10 @@ pane.item.notes.ignoreMissingImage=Some note images are missing and cannot be co
 pane.item.attachments.rename.title=새 제목:
 pane.item.attachments.rename.renameAssociatedFile=관련된 파일 이름 변경
 pane.item.attachments.rename.error=파일의 이름을 변경하던 중에 오류가 발생했습니다.
+pane.item.attachments.rename.confirmExtChange.text1=Are you sure you want to change the file extension from “%S” to “%S”?
+pane.item.attachments.rename.confirmExtChange.text2=If you change the extension, the file may open with a different application outside of %S.
+pane.item.attachments.rename.confirmExtChange.keep=Keep %S
+pane.item.attachments.rename.confirmExtChange.change=Use %S
 pane.item.attachments.fileNotFound.title=파일을 찾을 수 없음
 pane.item.attachments.fileNotFound.text1=첨부 파일을 찾지 못했습니다.
 pane.item.attachments.fileNotFound.text1.path=첨부 파일을 다음 경로에서 찾지 못했습니다:
@@ -448,7 +452,6 @@ pane.item.tags.icon.user=사용자 추가 태그
 pane.item.tags.icon.automatic=자동 추가 태그
 pane.item.tags.removeAll=이 항목의 태그를 모두 제거할까요?
 pane.item.parentItem=상위 항목:
-pane.item.viewOnline.tooltip=온라인에서 이 항목으로 이동
 
 pane.context.noParent=No parent item
 pane.context.itemNotes=Item Notes
@@ -922,6 +925,8 @@ integration.removeBibEntry.body=이것을 정말 참고도서 목록에서 빼
 
 integration.cited=인용됨
 integration.cited.loading=인용된 항목 불러오는 중...
+integration.openTabs=Open Documents
+integration.selectedItems=Selected Items
 integration.ibid=ibid
 integration.emptyCitationWarning.title=빈 인용
 integration.emptyCitationWarning.body=인용이 현재 선택된 스타일에는 없습니다. 그래도 추가하시겠습니까?
diff --git a/chrome/locale/lt-LT/zotero/zotero.dtd b/chrome/locale/lt-LT/zotero/zotero.dtd
index c87f23261a..e2c74aa7aa 100644
--- a/chrome/locale/lt-LT/zotero/zotero.dtd
+++ b/chrome/locale/lt-LT/zotero/zotero.dtd
@@ -111,7 +111,6 @@
 <!ENTITY zotero.item.textTransform.sentencecase "Sakinio pavidalu">
 <!ENTITY zotero.item.creatorTransform.nameSwap "Swap First/Last">
 <!ENTITY zotero.item.creatorTransform.fixCase "Fix Case">
-<!ENTITY zotero.item.viewOnline "Rodyti Internete">
 <!ENTITY zotero.item.copyAsURL "Kopijuoti URL">
 <!ENTITY zotero.item.deletePermanently "Pašalinti negrįžtamai...">
 
diff --git a/chrome/locale/lt-LT/zotero/zotero.properties b/chrome/locale/lt-LT/zotero/zotero.properties
index aacecc6312..924051ab30 100644
--- a/chrome/locale/lt-LT/zotero/zotero.properties
+++ b/chrome/locale/lt-LT/zotero/zotero.properties
@@ -417,6 +417,10 @@ pane.item.notes.ignoreMissingImage=Some note images are missing and cannot be co
 pane.item.attachments.rename.title=Naujas pavadinimas:
 pane.item.attachments.rename.renameAssociatedFile=Pervadinti susijusį failą
 pane.item.attachments.rename.error=Klaida pervadinant failą.
+pane.item.attachments.rename.confirmExtChange.text1=Are you sure you want to change the file extension from “%S” to “%S”?
+pane.item.attachments.rename.confirmExtChange.text2=If you change the extension, the file may open with a different application outside of %S.
+pane.item.attachments.rename.confirmExtChange.keep=Keep %S
+pane.item.attachments.rename.confirmExtChange.change=Use %S
 pane.item.attachments.fileNotFound.title=Failo neradome
 pane.item.attachments.fileNotFound.text1=Nepavyko rasti prisegto dokumento.
 pane.item.attachments.fileNotFound.text1.path=Pridėtos rinkmenos nepavyko rasti kelyje:
@@ -448,7 +452,6 @@ pane.item.tags.icon.user=Naudotojo pridėta gairė
 pane.item.tags.icon.automatic=Automatiškai pridėta gairė
 pane.item.tags.removeAll=Pašalinti visas šio įrašo gaires?
 pane.item.parentItem=Tėvinis įrašas:
-pane.item.viewOnline.tooltip=Eiti į įrašo tinklalapį
 
 pane.context.noParent=No parent item
 pane.context.itemNotes=Item Notes
@@ -922,6 +925,8 @@ integration.removeBibEntry.body=Tikrai neįtraukti jos į bibliografiją?
 
 integration.cited=Cituota
 integration.cited.loading=Įkeliami cituoti įrašai...
+integration.openTabs=Open Documents
+integration.selectedItems=Selected Items
 integration.ibid=ten pat
 integration.emptyCitationWarning.title=Tuščia nuoroda
 integration.emptyCitationWarning.body=Naudojant dabartinį citavimo stilių, šis citavimas atrodys tuščias. Tikrai jį pridėti?
diff --git a/chrome/locale/mn-MN/zotero/zotero.dtd b/chrome/locale/mn-MN/zotero/zotero.dtd
index 5b451c5c50..3c34b833bb 100644
--- a/chrome/locale/mn-MN/zotero/zotero.dtd
+++ b/chrome/locale/mn-MN/zotero/zotero.dtd
@@ -111,7 +111,6 @@
 <!ENTITY zotero.item.textTransform.sentencecase "Sentence case">
 <!ENTITY zotero.item.creatorTransform.nameSwap "Swap First/Last">
 <!ENTITY zotero.item.creatorTransform.fixCase "Fix Case">
-<!ENTITY zotero.item.viewOnline "View Online">
 <!ENTITY zotero.item.copyAsURL "Copy as URL">
 <!ENTITY zotero.item.deletePermanently "Delete Permanently…">
 
diff --git a/chrome/locale/mn-MN/zotero/zotero.properties b/chrome/locale/mn-MN/zotero/zotero.properties
index 7b4a7e6beb..eb8b51cd2f 100644
--- a/chrome/locale/mn-MN/zotero/zotero.properties
+++ b/chrome/locale/mn-MN/zotero/zotero.properties
@@ -417,6 +417,10 @@ pane.item.notes.ignoreMissingImage=Some note images are missing and cannot be co
 pane.item.attachments.rename.title=New title:
 pane.item.attachments.rename.renameAssociatedFile=Rename associated file
 pane.item.attachments.rename.error=An error occurred while renaming the file.
+pane.item.attachments.rename.confirmExtChange.text1=Are you sure you want to change the file extension from “%S” to “%S”?
+pane.item.attachments.rename.confirmExtChange.text2=If you change the extension, the file may open with a different application outside of %S.
+pane.item.attachments.rename.confirmExtChange.keep=Keep %S
+pane.item.attachments.rename.confirmExtChange.change=Use %S
 pane.item.attachments.fileNotFound.title=File Not Found
 pane.item.attachments.fileNotFound.text1=The attached file could not be found.
 pane.item.attachments.fileNotFound.text1.path=The attached file could not be found at the following path:
@@ -448,7 +452,6 @@ pane.item.tags.icon.user=User-added tag
 pane.item.tags.icon.automatic=Automatically added tag
 pane.item.tags.removeAll=Remove all tags from this item?
 pane.item.parentItem=Parent Item:
-pane.item.viewOnline.tooltip=Go to this item online
 
 pane.context.noParent=No parent item
 pane.context.itemNotes=Item Notes
@@ -922,6 +925,8 @@ integration.removeBibEntry.body=Are you sure you want to omit it from your bibli
 
 integration.cited=Cited
 integration.cited.loading=Loading Cited Items…
+integration.openTabs=Open Documents
+integration.selectedItems=Selected Items
 integration.ibid=ibid
 integration.emptyCitationWarning.title=Blank Citation
 integration.emptyCitationWarning.body=The citation you have specified would be empty in the currently selected style. Are you sure you want to add it?
diff --git a/chrome/locale/nb-NO/zotero/zotero.dtd b/chrome/locale/nb-NO/zotero/zotero.dtd
index 19f99b511c..1cbd7c2499 100644
--- a/chrome/locale/nb-NO/zotero/zotero.dtd
+++ b/chrome/locale/nb-NO/zotero/zotero.dtd
@@ -111,7 +111,6 @@
 <!ENTITY zotero.item.textTransform.sentencecase "Kun første ord med stor bokstav">
 <!ENTITY zotero.item.creatorTransform.nameSwap "Bytt fornavn/etternavn">
 <!ENTITY zotero.item.creatorTransform.fixCase "Fiks til stor forbokstav">
-<!ENTITY zotero.item.viewOnline "Vis på nett">
 <!ENTITY zotero.item.copyAsURL "Kopier som URL">
 <!ENTITY zotero.item.deletePermanently "Slett permanent…">
 
diff --git a/chrome/locale/nb-NO/zotero/zotero.properties b/chrome/locale/nb-NO/zotero/zotero.properties
index 7f9da3ffef..f6a2cc5a3a 100644
--- a/chrome/locale/nb-NO/zotero/zotero.properties
+++ b/chrome/locale/nb-NO/zotero/zotero.properties
@@ -417,6 +417,10 @@ pane.item.notes.ignoreMissingImage=Noen bilder i notater mangler og kan ikke kop
 pane.item.attachments.rename.title=Ny tittel:
 pane.item.attachments.rename.renameAssociatedFile=Gi nytt navn til tilknyttet fil
 pane.item.attachments.rename.error=En feil oppstod mens filnavnet ble endret.
+pane.item.attachments.rename.confirmExtChange.text1=Are you sure you want to change the file extension from “%S” to “%S”?
+pane.item.attachments.rename.confirmExtChange.text2=If you change the extension, the file may open with a different application outside of %S.
+pane.item.attachments.rename.confirmExtChange.keep=Keep %S
+pane.item.attachments.rename.confirmExtChange.change=Use %S
 pane.item.attachments.fileNotFound.title=Fant ikke filen
 pane.item.attachments.fileNotFound.text1=Vedlegg ble ikke funnet.
 pane.item.attachments.fileNotFound.text1.path=Vedlegget ble ikke funnet på følgende sti:
@@ -448,7 +452,6 @@ pane.item.tags.icon.user=Emneord lagt til av bruker
 pane.item.tags.icon.automatic=Automatisk lagt til emneord
 pane.item.tags.removeAll=Fjern alle emneord fra dette elementet?
 pane.item.parentItem=Overordnet element:
-pane.item.viewOnline.tooltip=Gå til dette elementet på nett
 
 pane.context.noParent=Ingen overordnede elementer
 pane.context.itemNotes=Notater til element
@@ -922,6 +925,8 @@ integration.removeBibEntry.body=Er du sikker på at du vil utelate den fra din b
 
 integration.cited=Henvist
 integration.cited.loading=Laster elementer henvist til…
+integration.openTabs=Open Documents
+integration.selectedItems=Selected Items
 integration.ibid=ibid
 integration.emptyCitationWarning.title=Blank henvisning
 integration.emptyCitationWarning.body=Henvisningen du har spesifisert vil bli tom i den valgte stilen. Er du sikker på at du vil legge den til?
diff --git a/chrome/locale/nl-NL/zotero/zotero.dtd b/chrome/locale/nl-NL/zotero/zotero.dtd
index 4e70ff1b72..1749ebc2ee 100644
--- a/chrome/locale/nl-NL/zotero/zotero.dtd
+++ b/chrome/locale/nl-NL/zotero/zotero.dtd
@@ -111,7 +111,6 @@
 <!ENTITY zotero.item.textTransform.sentencecase "Eerste woord (van een zin)">
 <!ENTITY zotero.item.creatorTransform.nameSwap "Swap First/Last">
 <!ENTITY zotero.item.creatorTransform.fixCase "Fix Case">
-<!ENTITY zotero.item.viewOnline "Bekijk online">
 <!ENTITY zotero.item.copyAsURL "Kopieer als URL">
 <!ENTITY zotero.item.deletePermanently "Permanent verwijderen…">
 
diff --git a/chrome/locale/nl-NL/zotero/zotero.properties b/chrome/locale/nl-NL/zotero/zotero.properties
index 9bfb52ade0..a8d9c7b326 100644
--- a/chrome/locale/nl-NL/zotero/zotero.properties
+++ b/chrome/locale/nl-NL/zotero/zotero.properties
@@ -417,6 +417,10 @@ pane.item.notes.ignoreMissingImage=Some note images are missing and cannot be co
 pane.item.attachments.rename.title=Nieuwe titel:
 pane.item.attachments.rename.renameAssociatedFile=Wijzig naam geassocieerd bestand
 pane.item.attachments.rename.error=Er is een fout opgetreden bij het wijzigen van de bestandsnaam.
+pane.item.attachments.rename.confirmExtChange.text1=Are you sure you want to change the file extension from “%S” to “%S”?
+pane.item.attachments.rename.confirmExtChange.text2=If you change the extension, the file may open with a different application outside of %S.
+pane.item.attachments.rename.confirmExtChange.keep=Keep %S
+pane.item.attachments.rename.confirmExtChange.change=Use %S
 pane.item.attachments.fileNotFound.title=Bestand niet gevonden
 pane.item.attachments.fileNotFound.text1=Het bijgevoegde bestand kon niet gevonden worden
 pane.item.attachments.fileNotFound.text1.path=The attached file could not be found at the following path:
@@ -448,7 +452,6 @@ pane.item.tags.icon.user=Door gebruiker toegevoegd label
 pane.item.tags.icon.automatic=Automatisch toegevoegd label
 pane.item.tags.removeAll=Alle labels van dit item verwijderen?
 pane.item.parentItem=Meest voornamelijke item:
-pane.item.viewOnline.tooltip=Ga online naar dit item
 
 pane.context.noParent=Geen hoofditem
 pane.context.itemNotes=Itemaantekeningen
@@ -922,6 +925,8 @@ integration.removeBibEntry.body=Weet u zeker dat u dit wil weglaten uit de bibli
 
 integration.cited=Geciteerd
 integration.cited.loading=Aangehaalde items wordt geladen…
+integration.openTabs=Open Documents
+integration.selectedItems=Selected Items
 integration.ibid=ibid
 integration.emptyCitationWarning.title=Lege verwijzing
 integration.emptyCitationWarning.body=De opgegeven verwijzing zou leeg zijn met de geselecteerde stijl. Weet u zeker dat u de verwijzing toch wil toevoegen?
diff --git a/chrome/locale/nn-NO/zotero/zotero.dtd b/chrome/locale/nn-NO/zotero/zotero.dtd
index 9e1895e889..839f12d08b 100644
--- a/chrome/locale/nn-NO/zotero/zotero.dtd
+++ b/chrome/locale/nn-NO/zotero/zotero.dtd
@@ -111,7 +111,6 @@
 <!ENTITY zotero.item.textTransform.sentencecase "Store bokstavar etter setningsreglar">
 <!ENTITY zotero.item.creatorTransform.nameSwap "Swap First/Last">
 <!ENTITY zotero.item.creatorTransform.fixCase "Fix Case">
-<!ENTITY zotero.item.viewOnline "Vis på nett">
 <!ENTITY zotero.item.copyAsURL "Kopier som URL">
 <!ENTITY zotero.item.deletePermanently "Slett for godt …">
 
diff --git a/chrome/locale/nn-NO/zotero/zotero.properties b/chrome/locale/nn-NO/zotero/zotero.properties
index f6f09b6b33..822d4e236e 100644
--- a/chrome/locale/nn-NO/zotero/zotero.properties
+++ b/chrome/locale/nn-NO/zotero/zotero.properties
@@ -417,6 +417,10 @@ pane.item.notes.ignoreMissingImage=Some note images are missing and cannot be co
 pane.item.attachments.rename.title=Ny tittel:
 pane.item.attachments.rename.renameAssociatedFile=Gje nytt namn til tilknytta fil
 pane.item.attachments.rename.error=Ein feil oppstod medan filnamnet vart endra.
+pane.item.attachments.rename.confirmExtChange.text1=Are you sure you want to change the file extension from “%S” to “%S”?
+pane.item.attachments.rename.confirmExtChange.text2=If you change the extension, the file may open with a different application outside of %S.
+pane.item.attachments.rename.confirmExtChange.keep=Keep %S
+pane.item.attachments.rename.confirmExtChange.change=Use %S
 pane.item.attachments.fileNotFound.title=Fann ikkje fila
 pane.item.attachments.fileNotFound.text1=The attached file could not be found.
 pane.item.attachments.fileNotFound.text1.path=The attached file could not be found at the following path:
@@ -448,7 +452,6 @@ pane.item.tags.icon.user=Brukerdefinert tagg:
 pane.item.tags.icon.automatic=Automatisk tagg:
 pane.item.tags.removeAll=Remove all tags from this item?
 pane.item.parentItem=Forelderelement:
-pane.item.viewOnline.tooltip=Go to this item online
 
 pane.context.noParent=No parent item
 pane.context.itemNotes=Item Notes
@@ -922,6 +925,8 @@ integration.removeBibEntry.body=Er du sikker på at du vil utelata det frå bibl
 
 integration.cited=Sitert
 integration.cited.loading=Lastar siterte element…
+integration.openTabs=Open Documents
+integration.selectedItems=Selected Items
 integration.ibid=ibid
 integration.emptyCitationWarning.title=Blank Citation
 integration.emptyCitationWarning.body=The citation you have specified would be empty in the currently selected style. Are you sure you want to add it?
diff --git a/chrome/locale/pl-PL/zotero/zotero.dtd b/chrome/locale/pl-PL/zotero/zotero.dtd
index 6ea70ade1a..5e002881b2 100644
--- a/chrome/locale/pl-PL/zotero/zotero.dtd
+++ b/chrome/locale/pl-PL/zotero/zotero.dtd
@@ -111,7 +111,6 @@
 <!ENTITY zotero.item.textTransform.sentencecase "Jak w zdaniu">
 <!ENTITY zotero.item.creatorTransform.nameSwap "Zamień imię i nazwisko">
 <!ENTITY zotero.item.creatorTransform.fixCase "Popraw wielkie litery">
-<!ENTITY zotero.item.viewOnline "Pokaż online">
 <!ENTITY zotero.item.copyAsURL "Kopiuj jako URL">
 <!ENTITY zotero.item.deletePermanently "Usuń trwale...">
 
diff --git a/chrome/locale/pl-PL/zotero/zotero.properties b/chrome/locale/pl-PL/zotero/zotero.properties
index 016ce4ab60..99ba371569 100644
--- a/chrome/locale/pl-PL/zotero/zotero.properties
+++ b/chrome/locale/pl-PL/zotero/zotero.properties
@@ -417,6 +417,10 @@ pane.item.notes.ignoreMissingImage=Brakuje niektórych obrazów notatek  i nie m
 pane.item.attachments.rename.title=Nowy tytuł:
 pane.item.attachments.rename.renameAssociatedFile=Zmień nazwę powiązanego pliku
 pane.item.attachments.rename.error=Podczas zmieniania nazwy pliku wystąpił błąd.
+pane.item.attachments.rename.confirmExtChange.text1=Are you sure you want to change the file extension from “%S” to “%S”?
+pane.item.attachments.rename.confirmExtChange.text2=If you change the extension, the file may open with a different application outside of %S.
+pane.item.attachments.rename.confirmExtChange.keep=Keep %S
+pane.item.attachments.rename.confirmExtChange.change=Use %S
 pane.item.attachments.fileNotFound.title=Nie znaleziono pliku
 pane.item.attachments.fileNotFound.text1=Nie można znaleźć załączonego pliku.
 pane.item.attachments.fileNotFound.text1.path=Nie można znaleźć pliku załącznika w następującej ścieżce:
@@ -448,7 +452,6 @@ pane.item.tags.icon.user=Etykieta dodana przez użytkownika
 pane.item.tags.icon.automatic=Etykieta dodana automatycznie
 pane.item.tags.removeAll=Czy usunąć wszystkie etykiety z tego elementu?
 pane.item.parentItem=Element nadrzędny:
-pane.item.viewOnline.tooltip=Idź do tego elementu online
 
 pane.context.noParent=Brak elementu nadrzędnego
 pane.context.itemNotes=Notatki elementu
@@ -922,6 +925,8 @@ integration.removeBibEntry.body=Czy na pewno chcesz pominąć ten wpis w twojej
 
 integration.cited=Cytowany
 integration.cited.loading=Wczytywanie cytowanych elementów...
+integration.openTabs=Open Documents
+integration.selectedItems=Selected Items
 integration.ibid=ibid
 integration.emptyCitationWarning.title=Puste cytowanie
 integration.emptyCitationWarning.body=Wybrane cytowanie będzie puste w aktualnie wybranym stylu. Czy na pewno je dodać?
diff --git a/chrome/locale/pt-BR/zotero/zotero.dtd b/chrome/locale/pt-BR/zotero/zotero.dtd
index 98909c6ec2..db52e042a1 100644
--- a/chrome/locale/pt-BR/zotero/zotero.dtd
+++ b/chrome/locale/pt-BR/zotero/zotero.dtd
@@ -111,7 +111,6 @@
 <!ENTITY zotero.item.textTransform.sentencecase "Início da frase em maiúscula">
 <!ENTITY zotero.item.creatorTransform.nameSwap "Inverter primeiro/último">
 <!ENTITY zotero.item.creatorTransform.fixCase "Fix Case">
-<!ENTITY zotero.item.viewOnline "Ver Online">
 <!ENTITY zotero.item.copyAsURL "Copiar como URL">
 <!ENTITY zotero.item.deletePermanently "Excluir permanentemente">
 
diff --git a/chrome/locale/pt-BR/zotero/zotero.properties b/chrome/locale/pt-BR/zotero/zotero.properties
index 349151518c..9ea809747f 100644
--- a/chrome/locale/pt-BR/zotero/zotero.properties
+++ b/chrome/locale/pt-BR/zotero/zotero.properties
@@ -417,6 +417,10 @@ pane.item.notes.ignoreMissingImage=Algumas imagens das notas estão em falta e n
 pane.item.attachments.rename.title=Novo título:
 pane.item.attachments.rename.renameAssociatedFile=Renomear arquivo associado
 pane.item.attachments.rename.error=Um erro ocorreu durante a renomeação do arquivo.
+pane.item.attachments.rename.confirmExtChange.text1=Are you sure you want to change the file extension from “%S” to “%S”?
+pane.item.attachments.rename.confirmExtChange.text2=If you change the extension, the file may open with a different application outside of %S.
+pane.item.attachments.rename.confirmExtChange.keep=Keep %S
+pane.item.attachments.rename.confirmExtChange.change=Use %S
 pane.item.attachments.fileNotFound.title=Arquivo não encontrado
 pane.item.attachments.fileNotFound.text1=Não foi possível encontrar o arquivo anexado.
 pane.item.attachments.fileNotFound.text1.path=Não foi possível encontrar o arquivo anexo seguindo o caminho:
@@ -448,7 +452,6 @@ pane.item.tags.icon.user=Etiqueta de usuário
 pane.item.tags.icon.automatic=Etiqueta adicionada automaticamente
 pane.item.tags.removeAll=Remover todas as etiquetas deste item?
 pane.item.parentItem=Item pai:
-pane.item.viewOnline.tooltip=Ir a este item online
 
 pane.context.noParent=Sem item pai
 pane.context.itemNotes=Notas do item
@@ -922,6 +925,8 @@ integration.removeBibEntry.body=Você tem certeza de que quer omitir isso da sua
 
 integration.cited=Citado
 integration.cited.loading=Carregando referências citadas...
+integration.openTabs=Open Documents
+integration.selectedItems=Selected Items
 integration.ibid=ibid
 integration.emptyCitationWarning.title=Citação em branco
 integration.emptyCitationWarning.body=A citação que você especificou firaria em branco no estilo atualmente selecionado. Tem certeza de que deseja adicioná-la?
diff --git a/chrome/locale/pt-PT/zotero/zotero.dtd b/chrome/locale/pt-PT/zotero/zotero.dtd
index 578cf3e1d0..5567ebbd98 100644
--- a/chrome/locale/pt-PT/zotero/zotero.dtd
+++ b/chrome/locale/pt-PT/zotero/zotero.dtd
@@ -111,7 +111,6 @@
 <!ENTITY zotero.item.textTransform.sentencecase "Maiúsculas Iniciais de Frase">
 <!ENTITY zotero.item.creatorTransform.nameSwap "Inverter primeiro/último">
 <!ENTITY zotero.item.creatorTransform.fixCase "Fix Case">
-<!ENTITY zotero.item.viewOnline "Ver em Linha">
 <!ENTITY zotero.item.copyAsURL "Copiar como URL">
 <!ENTITY zotero.item.deletePermanently "Remover Permanentemente…">
 
diff --git a/chrome/locale/pt-PT/zotero/zotero.properties b/chrome/locale/pt-PT/zotero/zotero.properties
index adc2a60e2d..16aca9da4a 100644
--- a/chrome/locale/pt-PT/zotero/zotero.properties
+++ b/chrome/locale/pt-PT/zotero/zotero.properties
@@ -417,6 +417,10 @@ pane.item.notes.ignoreMissingImage=Algumas imagens das notas estão em falta e n
 pane.item.attachments.rename.title=Novo título:
 pane.item.attachments.rename.renameAssociatedFile=Alterar nome do arquivo associado
 pane.item.attachments.rename.error=Ocorreu um erro ao alterar o nome do arquivo.
+pane.item.attachments.rename.confirmExtChange.text1=Are you sure you want to change the file extension from “%S” to “%S”?
+pane.item.attachments.rename.confirmExtChange.text2=If you change the extension, the file may open with a different application outside of %S.
+pane.item.attachments.rename.confirmExtChange.keep=Keep %S
+pane.item.attachments.rename.confirmExtChange.change=Use %S
 pane.item.attachments.fileNotFound.title=Arquivo Não Encontrado
 pane.item.attachments.fileNotFound.text1=O arquivo anexado não foi encontrado.
 pane.item.attachments.fileNotFound.text1.path=O arquivo anexo não foi encontrado no seguinte local:
@@ -448,7 +452,6 @@ pane.item.tags.icon.user=Etiqueta adicionada pelo utilizador
 pane.item.tags.icon.automatic=Etiqueta adicionada automaticamente
 pane.item.tags.removeAll=Remover todas as etiquetas deste item?
 pane.item.parentItem=Item Ascendente:
-pane.item.viewOnline.tooltip=Ir para este item online
 
 pane.context.noParent=Sem item-mãe
 pane.context.itemNotes=Notas do Item
@@ -922,6 +925,8 @@ integration.removeBibEntry.body=Quer mesmo omiti-la da sua bibliografia?
 
 integration.cited=Citadas
 integration.cited.loading=Carregando Itens Citados...
+integration.openTabs=Open Documents
+integration.selectedItems=Selected Items
 integration.ibid=ibid
 integration.emptyCitationWarning.title=Citação em Branco
 integration.emptyCitationWarning.body=A citação que especificou ficaria vazia no estilo actualmente seleccionado. Tem a certeza de que a quer adicionar?
diff --git a/chrome/locale/ro-RO/zotero/zotero.dtd b/chrome/locale/ro-RO/zotero/zotero.dtd
index 3e144900b4..5b0299cc02 100644
--- a/chrome/locale/ro-RO/zotero/zotero.dtd
+++ b/chrome/locale/ro-RO/zotero/zotero.dtd
@@ -111,7 +111,6 @@
 <!ENTITY zotero.item.textTransform.sentencecase "Majusculă ca la propoziție">
 <!ENTITY zotero.item.creatorTransform.nameSwap "Schimbați primul/ultimul">
 <!ENTITY zotero.item.creatorTransform.fixCase "Repară majusculele">
-<!ENTITY zotero.item.viewOnline "Vezi online">
 <!ENTITY zotero.item.copyAsURL "Copiază ca URL">
 <!ENTITY zotero.item.deletePermanently "Șterge permanent...">
 
diff --git a/chrome/locale/ro-RO/zotero/zotero.properties b/chrome/locale/ro-RO/zotero/zotero.properties
index f32cb2a580..4102daf609 100644
--- a/chrome/locale/ro-RO/zotero/zotero.properties
+++ b/chrome/locale/ro-RO/zotero/zotero.properties
@@ -417,6 +417,10 @@ pane.item.notes.ignoreMissingImage=Unele imagini ale notiței lipsesc și nu pot
 pane.item.attachments.rename.title=Titlu nou:
 pane.item.attachments.rename.renameAssociatedFile=Redenumește fișierul asociat
 pane.item.attachments.rename.error=A apărut o eroare în timpul redenumirii fișierului.
+pane.item.attachments.rename.confirmExtChange.text1=Are you sure you want to change the file extension from “%S” to “%S”?
+pane.item.attachments.rename.confirmExtChange.text2=If you change the extension, the file may open with a different application outside of %S.
+pane.item.attachments.rename.confirmExtChange.keep=Keep %S
+pane.item.attachments.rename.confirmExtChange.change=Use %S
 pane.item.attachments.fileNotFound.title=Fișier inexistent
 pane.item.attachments.fileNotFound.text1=Fișierul anexat nu a putut fi găsit.
 pane.item.attachments.fileNotFound.text1.path=Fișierul anexat nu a putut fi găsit la următoarea cale: 
@@ -448,7 +452,6 @@ pane.item.tags.icon.user=Etichetă adăugată de utilizator
 pane.item.tags.icon.automatic=Etichetă adăugată automat
 pane.item.tags.removeAll=Ștergi toate etichetele de la acest item?
 pane.item.parentItem=Înregistrare părinte:
-pane.item.viewOnline.tooltip=Mergi la această înregistrare online
 
 pane.context.noParent=Fără item părinte
 pane.context.itemNotes=Note item
@@ -922,6 +925,8 @@ integration.removeBibEntry.body=Ești sigur că vrei să omiți această intrare
 
 integration.cited=Citat
 integration.cited.loading=Încarcă înregistrările citate...
+integration.openTabs=Open Documents
+integration.selectedItems=Selected Items
 integration.ibid=ibidem
 integration.emptyCitationWarning.title=Citare goală
 integration.emptyCitationWarning.body=Citarea pe care ai specificat-o este goală în stilul curent selectat. Ești sigur că vrei să o adaugi?
diff --git a/chrome/locale/ru-RU/zotero/zotero.dtd b/chrome/locale/ru-RU/zotero/zotero.dtd
index a5ca5b1379..4a62e2432b 100644
--- a/chrome/locale/ru-RU/zotero/zotero.dtd
+++ b/chrome/locale/ru-RU/zotero/zotero.dtd
@@ -111,7 +111,6 @@
 <!ENTITY zotero.item.textTransform.sentencecase "Как в предложении">
 <!ENTITY zotero.item.creatorTransform.nameSwap "Поменять местами имя и фамилию">
 <!ENTITY zotero.item.creatorTransform.fixCase "Исправить регистр">
-<!ENTITY zotero.item.viewOnline "Просмотреть онлайн">
 <!ENTITY zotero.item.copyAsURL "Скопировать как URL">
 <!ENTITY zotero.item.deletePermanently "Удалить навсегда…">
 
diff --git a/chrome/locale/ru-RU/zotero/zotero.properties b/chrome/locale/ru-RU/zotero/zotero.properties
index 72f2b664be..1af2a625a8 100644
--- a/chrome/locale/ru-RU/zotero/zotero.properties
+++ b/chrome/locale/ru-RU/zotero/zotero.properties
@@ -417,6 +417,10 @@ pane.item.notes.ignoreMissingImage=Некоторые изображения и
 pane.item.attachments.rename.title=Новое название:
 pane.item.attachments.rename.renameAssociatedFile=Переименовать связанный файл
 pane.item.attachments.rename.error=Произошла ошибка при переименовании файла.
+pane.item.attachments.rename.confirmExtChange.text1=Are you sure you want to change the file extension from “%S” to “%S”?
+pane.item.attachments.rename.confirmExtChange.text2=If you change the extension, the file may open with a different application outside of %S.
+pane.item.attachments.rename.confirmExtChange.keep=Keep %S
+pane.item.attachments.rename.confirmExtChange.change=Use %S
 pane.item.attachments.fileNotFound.title=Файл не найден
 pane.item.attachments.fileNotFound.text1=Вложенный файл не найден.
 pane.item.attachments.fileNotFound.text1.path=Вложенный файл не был найден по этому пути:
@@ -448,7 +452,6 @@ pane.item.tags.icon.user=Тег, добавленный пользователе
 pane.item.tags.icon.automatic=Тег, добавленный автоматически
 pane.item.tags.removeAll=Удалить все теги этой записи?
 pane.item.parentItem=Родительская запись:
-pane.item.viewOnline.tooltip=Перейти к записи в се́ти
 
 pane.context.noParent=Нет родительской записи
 pane.context.itemNotes=Заметки записи
@@ -922,6 +925,8 @@ integration.removeBibEntry.body=Вы уверены, что хотите иск
 
 integration.cited=Процитированный
 integration.cited.loading=Загружаются процитированные элементы...
+integration.openTabs=Open Documents
+integration.selectedItems=Selected Items
 integration.ibid=там же
 integration.emptyCitationWarning.title=Пустая цитата
 integration.emptyCitationWarning.body=Выбранная цитата будет пуста при текущем выбранном стиле. Вы уверены, что хотите её добавить?
diff --git a/chrome/locale/sk-SK/zotero/zotero.dtd b/chrome/locale/sk-SK/zotero/zotero.dtd
index c4f8261cbf..a7a61f5a1f 100644
--- a/chrome/locale/sk-SK/zotero/zotero.dtd
+++ b/chrome/locale/sk-SK/zotero/zotero.dtd
@@ -111,7 +111,6 @@
 <!ENTITY zotero.item.textTransform.sentencecase "Prvé veľké písmeno vo vete">
 <!ENTITY zotero.item.creatorTransform.nameSwap "Swap First/Last">
 <!ENTITY zotero.item.creatorTransform.fixCase "Fix Case">
-<!ENTITY zotero.item.viewOnline "Zobraziť online">
 <!ENTITY zotero.item.copyAsURL "Kopírovať ako URL">
 <!ENTITY zotero.item.deletePermanently "Odstrániť natrvalo...">
 
diff --git a/chrome/locale/sk-SK/zotero/zotero.properties b/chrome/locale/sk-SK/zotero/zotero.properties
index c848275471..8962db7af0 100644
--- a/chrome/locale/sk-SK/zotero/zotero.properties
+++ b/chrome/locale/sk-SK/zotero/zotero.properties
@@ -417,6 +417,10 @@ pane.item.notes.ignoreMissingImage=Some note images are missing and cannot be co
 pane.item.attachments.rename.title=Nový názov:
 pane.item.attachments.rename.renameAssociatedFile=Premenovať prislúchajúci súbor
 pane.item.attachments.rename.error=Pri premenovávaní súboru sa vyskytla chyba.
+pane.item.attachments.rename.confirmExtChange.text1=Are you sure you want to change the file extension from “%S” to “%S”?
+pane.item.attachments.rename.confirmExtChange.text2=If you change the extension, the file may open with a different application outside of %S.
+pane.item.attachments.rename.confirmExtChange.keep=Keep %S
+pane.item.attachments.rename.confirmExtChange.change=Use %S
 pane.item.attachments.fileNotFound.title=Súbor sa nenašiel
 pane.item.attachments.fileNotFound.text1=Priložený súbor sa nenašiel.
 pane.item.attachments.fileNotFound.text1.path=Priložený súbor sa nenašiel na nasledujúcej ceste:
@@ -448,7 +452,6 @@ pane.item.tags.icon.user=Značka priradená používateľom
 pane.item.tags.icon.automatic=Automaticky priradená značka
 pane.item.tags.removeAll=Odstrániť všetky značky z tohto záznamu?
 pane.item.parentItem=Nadradený záznam:
-pane.item.viewOnline.tooltip=Prejsť na tento záznam na internete
 
 pane.context.noParent=Žiadne nadradené záznamy
 pane.context.itemNotes=Poznámky o zázname
@@ -922,6 +925,8 @@ integration.removeBibEntry.body=Naozaj to chcete vynechať z vašej bibliografie
 
 integration.cited=Citované
 integration.cited.loading=Nahrávam citované záznamy...
+integration.openTabs=Open Documents
+integration.selectedItems=Selected Items
 integration.ibid=tamže
 integration.emptyCitationWarning.title=Prázdna citácia
 integration.emptyCitationWarning.body=Vybraná citácia zostane v aktuálne zvolenom štýle prázdna. Naozaj ju chcete vložiť?
diff --git a/chrome/locale/sl-SI/zotero/zotero.dtd b/chrome/locale/sl-SI/zotero/zotero.dtd
index 688f2ea026..47bf4c250c 100644
--- a/chrome/locale/sl-SI/zotero/zotero.dtd
+++ b/chrome/locale/sl-SI/zotero/zotero.dtd
@@ -111,7 +111,6 @@
 <!ENTITY zotero.item.textTransform.sentencecase "Kot v stavku">
 <!ENTITY zotero.item.creatorTransform.nameSwap "Zamenjaj ime/priimek">
 <!ENTITY zotero.item.creatorTransform.fixCase "Popravi velike/male začetnice">
-<!ENTITY zotero.item.viewOnline "Pokaži na spletu">
 <!ENTITY zotero.item.copyAsURL "Kopiraj kot URL">
 <!ENTITY zotero.item.deletePermanently "Izbriši trajno ...">
 
diff --git a/chrome/locale/sl-SI/zotero/zotero.properties b/chrome/locale/sl-SI/zotero/zotero.properties
index bda59b9d84..f444308292 100644
--- a/chrome/locale/sl-SI/zotero/zotero.properties
+++ b/chrome/locale/sl-SI/zotero/zotero.properties
@@ -417,6 +417,10 @@ pane.item.notes.ignoreMissingImage=Nekatere slike opomb manjkajo in jih ni mogo
 pane.item.attachments.rename.title=Nov naslov:
 pane.item.attachments.rename.renameAssociatedFile=Preimenuj pridruženo datoteko
 pane.item.attachments.rename.error=Pri preimenovanju datoteke je prišlo do napake
+pane.item.attachments.rename.confirmExtChange.text1=Are you sure you want to change the file extension from “%S” to “%S”?
+pane.item.attachments.rename.confirmExtChange.text2=If you change the extension, the file may open with a different application outside of %S.
+pane.item.attachments.rename.confirmExtChange.keep=Keep %S
+pane.item.attachments.rename.confirmExtChange.change=Use %S
 pane.item.attachments.fileNotFound.title=Datoteke ni mogoče najti
 pane.item.attachments.fileNotFound.text1=Pripete datoteke ni mogoče najti.
 pane.item.attachments.fileNotFound.text1.path=Pripete datoteke ni mogoče najti na naslednji poti:
@@ -448,7 +452,6 @@ pane.item.tags.icon.user=Uporabniško dodana značka
 pane.item.tags.icon.automatic=Samodejno dodana značka
 pane.item.tags.removeAll=Želite ddstranite vse značke s tega vnosa?
 pane.item.parentItem=Nadrejeni vnos:
-pane.item.viewOnline.tooltip=Oglej si ta vnos na spletu
 
 pane.context.noParent=Ni nadrejenega vnosa
 pane.context.itemNotes=Opombe vnosa
@@ -922,6 +925,8 @@ integration.removeBibEntry.body=Ste prepričani, da ga želite izpustiti iz bibl
 
 integration.cited=Citirano
 integration.cited.loading=Nalaganje citiranih vnosov ...
+integration.openTabs=Open Documents
+integration.selectedItems=Selected Items
 integration.ibid=isto
 integration.emptyCitationWarning.title=Prazen citat
 integration.emptyCitationWarning.body=Citat, ki ste ga navedli, bi bil prazen v trenutno izbranem slogu. Ste prepričani, da ga želite dodati?
diff --git a/chrome/locale/sr-RS/zotero/zotero.dtd b/chrome/locale/sr-RS/zotero/zotero.dtd
index 2e3e72e983..21199df4c6 100644
--- a/chrome/locale/sr-RS/zotero/zotero.dtd
+++ b/chrome/locale/sr-RS/zotero/zotero.dtd
@@ -111,7 +111,6 @@
 <!ENTITY zotero.item.textTransform.sentencecase "Величина слова у реченици">
 <!ENTITY zotero.item.creatorTransform.nameSwap "Swap First/Last">
 <!ENTITY zotero.item.creatorTransform.fixCase "Fix Case">
-<!ENTITY zotero.item.viewOnline "Погледај на мрежи">
 <!ENTITY zotero.item.copyAsURL "Копирај као адресу">
 <!ENTITY zotero.item.deletePermanently "Трајно изриши…">
 
diff --git a/chrome/locale/sr-RS/zotero/zotero.properties b/chrome/locale/sr-RS/zotero/zotero.properties
index 916d517894..02c594362e 100644
--- a/chrome/locale/sr-RS/zotero/zotero.properties
+++ b/chrome/locale/sr-RS/zotero/zotero.properties
@@ -417,6 +417,10 @@ pane.item.notes.ignoreMissingImage=Some note images are missing and cannot be co
 pane.item.attachments.rename.title=Нови наслов:
 pane.item.attachments.rename.renameAssociatedFile=Преименујте повезану датотеку
 pane.item.attachments.rename.error=Грешка током промене имена датотеке.
+pane.item.attachments.rename.confirmExtChange.text1=Are you sure you want to change the file extension from “%S” to “%S”?
+pane.item.attachments.rename.confirmExtChange.text2=If you change the extension, the file may open with a different application outside of %S.
+pane.item.attachments.rename.confirmExtChange.keep=Keep %S
+pane.item.attachments.rename.confirmExtChange.change=Use %S
 pane.item.attachments.fileNotFound.title=Датотека није нађена
 pane.item.attachments.fileNotFound.text1=The attached file could not be found.
 pane.item.attachments.fileNotFound.text1.path=The attached file could not be found at the following path:
@@ -448,7 +452,6 @@ pane.item.tags.icon.user=Ознаке које је додао корисник
 pane.item.tags.icon.automatic=Аутоматски додате ознаке
 pane.item.tags.removeAll=Remove all tags from this item?
 pane.item.parentItem=Родитељска ставка:
-pane.item.viewOnline.tooltip=Go to this item online
 
 pane.context.noParent=No parent item
 pane.context.itemNotes=Item Notes
@@ -922,6 +925,8 @@ integration.removeBibEntry.body=Are you sure you want to omit it from your bibli
 
 integration.cited=Cited
 integration.cited.loading=Loading Cited Items…
+integration.openTabs=Open Documents
+integration.selectedItems=Selected Items
 integration.ibid=ibid
 integration.emptyCitationWarning.title=Blank Citation
 integration.emptyCitationWarning.body=The citation you have specified would be empty in the currently selected style. Are you sure you want to add it?
diff --git a/chrome/locale/sv-SE/zotero/zotero.dtd b/chrome/locale/sv-SE/zotero/zotero.dtd
index 46af666026..8846aaa5c0 100644
--- a/chrome/locale/sv-SE/zotero/zotero.dtd
+++ b/chrome/locale/sv-SE/zotero/zotero.dtd
@@ -111,7 +111,6 @@
 <!ENTITY zotero.item.textTransform.sentencecase "Vanlig versalisering">
 <!ENTITY zotero.item.creatorTransform.nameSwap "Swap First/Last">
 <!ENTITY zotero.item.creatorTransform.fixCase "Fix Case">
-<!ENTITY zotero.item.viewOnline "Visa online">
 <!ENTITY zotero.item.copyAsURL "Kopiera som URL">
 <!ENTITY zotero.item.deletePermanently "Radera permanent…">
 
diff --git a/chrome/locale/sv-SE/zotero/zotero.properties b/chrome/locale/sv-SE/zotero/zotero.properties
index f29354a054..ed1337fae0 100644
--- a/chrome/locale/sv-SE/zotero/zotero.properties
+++ b/chrome/locale/sv-SE/zotero/zotero.properties
@@ -417,6 +417,10 @@ pane.item.notes.ignoreMissingImage=Vissa bilder i anteckningarna saknas och kan
 pane.item.attachments.rename.title=Ny titel:
 pane.item.attachments.rename.renameAssociatedFile=Ändra namn på bifogad fil
 pane.item.attachments.rename.error=Ett fel uppstod när namnet på filen skulle ändras.
+pane.item.attachments.rename.confirmExtChange.text1=Are you sure you want to change the file extension from “%S” to “%S”?
+pane.item.attachments.rename.confirmExtChange.text2=If you change the extension, the file may open with a different application outside of %S.
+pane.item.attachments.rename.confirmExtChange.keep=Keep %S
+pane.item.attachments.rename.confirmExtChange.change=Use %S
 pane.item.attachments.fileNotFound.title=Filen kunde inte hittas
 pane.item.attachments.fileNotFound.text1=Den bifogade filen kunde inte hittas.
 pane.item.attachments.fileNotFound.text1.path=Den bifogade filen kunde inte hittas i följande sökväg:
@@ -448,7 +452,6 @@ pane.item.tags.icon.user=Etikett tillagd av användare
 pane.item.tags.icon.automatic=Etikett tillagd automatiskt
 pane.item.tags.removeAll=Radera alla etiketter från denna källa?
 pane.item.parentItem=Huvudkälla:
-pane.item.viewOnline.tooltip=Gå till källan online
 
 pane.context.noParent=Föräldra-källa saknas
 pane.context.itemNotes=Käll-anteckningar
@@ -922,6 +925,8 @@ integration.removeBibEntry.body=Är du säker på att du vill utesluta den från
 
 integration.cited=Refererad
 integration.cited.loading=Laddar refererade källor...
+integration.openTabs=Open Documents
+integration.selectedItems=Selected Items
 integration.ibid=ibid
 integration.emptyCitationWarning.title=Tom källhänvisning
 integration.emptyCitationWarning.body=Källhänvisningen som du valt kommer att bli tom i den nu valda referensmallen. Är du säker på att du vill lägga till den?
diff --git a/chrome/locale/th-TH/zotero/zotero.dtd b/chrome/locale/th-TH/zotero/zotero.dtd
index 12eb94953d..aa9f92d3c5 100644
--- a/chrome/locale/th-TH/zotero/zotero.dtd
+++ b/chrome/locale/th-TH/zotero/zotero.dtd
@@ -111,7 +111,6 @@
 <!ENTITY zotero.item.textTransform.sentencecase "แบบประโยค">
 <!ENTITY zotero.item.creatorTransform.nameSwap "Swap First/Last">
 <!ENTITY zotero.item.creatorTransform.fixCase "Fix Case">
-<!ENTITY zotero.item.viewOnline "ดูออนไลน์">
 <!ENTITY zotero.item.copyAsURL "Copy as URL">
 <!ENTITY zotero.item.deletePermanently "Delete Permanently…">
 
diff --git a/chrome/locale/th-TH/zotero/zotero.properties b/chrome/locale/th-TH/zotero/zotero.properties
index 6e8837c106..65b0bd3d4c 100644
--- a/chrome/locale/th-TH/zotero/zotero.properties
+++ b/chrome/locale/th-TH/zotero/zotero.properties
@@ -417,6 +417,10 @@ pane.item.notes.ignoreMissingImage=Some note images are missing and cannot be co
 pane.item.attachments.rename.title=ชื่อเรื่องใหม่:
 pane.item.attachments.rename.renameAssociatedFile=เปลี่ยนชื่อแฟ้มที่สัมพันธ์กัน
 pane.item.attachments.rename.error=พบความผิดพลาดขณะกำลังเปลี่ยนชื่อแฟ้ม
+pane.item.attachments.rename.confirmExtChange.text1=Are you sure you want to change the file extension from “%S” to “%S”?
+pane.item.attachments.rename.confirmExtChange.text2=If you change the extension, the file may open with a different application outside of %S.
+pane.item.attachments.rename.confirmExtChange.keep=Keep %S
+pane.item.attachments.rename.confirmExtChange.change=Use %S
 pane.item.attachments.fileNotFound.title=ไม่พบแฟ้ม
 pane.item.attachments.fileNotFound.text1=The attached file could not be found.
 pane.item.attachments.fileNotFound.text1.path=The attached file could not be found at the following path:
@@ -448,7 +452,6 @@ pane.item.tags.icon.user=แท็กที่ผู้ใช้เพิ่ม
 pane.item.tags.icon.automatic=เพิ่มแท็กโดยอัตโนมัติ
 pane.item.tags.removeAll=Remove all tags from this item?
 pane.item.parentItem=รายการแม่:
-pane.item.viewOnline.tooltip=ไปยังรายการนี้บนออนไลน์
 
 pane.context.noParent=No parent item
 pane.context.itemNotes=Item Notes
@@ -922,6 +925,8 @@ integration.removeBibEntry.body=คุณแน่ใจหรือว่าค
 
 integration.cited=อ้างถึง
 integration.cited.loading=กำลังบรรจุรายการที่อ้างถึง...
+integration.openTabs=Open Documents
+integration.selectedItems=Selected Items
 integration.ibid=ในที่เดียวกัน
 integration.emptyCitationWarning.title=การอ้างอิงว่างเปล่า
 integration.emptyCitationWarning.body=การอ้างอิงที่คุณกำหนดอาจว่างเปล่าในรูปแบบการอ้างอิงที่เลือกนี้ คุณแน่ใจหรือว่าคุณต้องการเพิ่ม?
diff --git a/chrome/locale/tr-TR/zotero/zotero.dtd b/chrome/locale/tr-TR/zotero/zotero.dtd
index 24cc432cad..8eaee18312 100644
--- a/chrome/locale/tr-TR/zotero/zotero.dtd
+++ b/chrome/locale/tr-TR/zotero/zotero.dtd
@@ -111,7 +111,6 @@
 <!ENTITY zotero.item.textTransform.sentencecase "Cümle Biçimi">
 <!ENTITY zotero.item.creatorTransform.nameSwap "İlk ve Soyadları Takas Et">
 <!ENTITY zotero.item.creatorTransform.fixCase "Büyük Harfleri Düzelt">
-<!ENTITY zotero.item.viewOnline "Çevrimiçi Göster">
 <!ENTITY zotero.item.copyAsURL "URL'i Kopyala">
 <!ENTITY zotero.item.deletePermanently "Kalıcı Olarak Sil...">
 
diff --git a/chrome/locale/tr-TR/zotero/zotero.properties b/chrome/locale/tr-TR/zotero/zotero.properties
index fe210c9b69..d0b34a0852 100644
--- a/chrome/locale/tr-TR/zotero/zotero.properties
+++ b/chrome/locale/tr-TR/zotero/zotero.properties
@@ -417,6 +417,10 @@ pane.item.notes.ignoreMissingImage=Bazı not resimleri kayıp ve kopyalanamıyor
 pane.item.attachments.rename.title=Yeni başlık:
 pane.item.attachments.rename.renameAssociatedFile=İlişkilendirilen dosyayı yeniden adlandır
 pane.item.attachments.rename.error=Dosya yeniden adlandırılırken bir hata oluştu.
+pane.item.attachments.rename.confirmExtChange.text1=Are you sure you want to change the file extension from “%S” to “%S”?
+pane.item.attachments.rename.confirmExtChange.text2=If you change the extension, the file may open with a different application outside of %S.
+pane.item.attachments.rename.confirmExtChange.keep=Keep %S
+pane.item.attachments.rename.confirmExtChange.change=Use %S
 pane.item.attachments.fileNotFound.title=Dosya Bulunamadı
 pane.item.attachments.fileNotFound.text1=Eklenen dosya bulunamadı.
 pane.item.attachments.fileNotFound.text1.path=Eklenmiş dosya bu dosya yolunda bulunamadı:
@@ -448,7 +452,6 @@ pane.item.tags.icon.user=Kullanıcının eklediği etiket
 pane.item.tags.icon.automatic=Otomatik olarak eklenen etiket
 pane.item.tags.removeAll=Bu eserden tüm etiketleri kaldırmak istiyor musunuz?
 pane.item.parentItem=Ana Eser:
-pane.item.viewOnline.tooltip=Bu esere çevrimiçi git
 
 pane.context.noParent=Üst eser yok
 pane.context.itemNotes=Eser Notları
@@ -922,6 +925,8 @@ integration.removeBibEntry.body=Bunu kaynakçanızdan çıkarmak istediğinize e
 
 integration.cited=Alıntı Yapılmış
 integration.cited.loading=Alıntı Yapılmış Eserleri Yüklüyor...
+integration.openTabs=Open Documents
+integration.selectedItems=Selected Items
 integration.ibid=a.g.e.
 integration.emptyCitationWarning.title=Boş Alıntı
 integration.emptyCitationWarning.body=Alıntınız, şu an seçili stiliniz kullanıldığında boş olacaktır. Bunu eklemek istediğinize emin misiniz?
diff --git a/chrome/locale/uk-UA/zotero/zotero.dtd b/chrome/locale/uk-UA/zotero/zotero.dtd
index 473dd61a46..9ea2163a06 100644
--- a/chrome/locale/uk-UA/zotero/zotero.dtd
+++ b/chrome/locale/uk-UA/zotero/zotero.dtd
@@ -111,7 +111,6 @@
 <!ENTITY zotero.item.textTransform.sentencecase "Як у реченні">
 <!ENTITY zotero.item.creatorTransform.nameSwap "Swap First/Last">
 <!ENTITY zotero.item.creatorTransform.fixCase "Fix Case">
-<!ENTITY zotero.item.viewOnline "Дивитись онлайн">
 <!ENTITY zotero.item.copyAsURL "Копіювати у вигляді URL">
 <!ENTITY zotero.item.deletePermanently "Видалити остаточно...">
 
diff --git a/chrome/locale/uk-UA/zotero/zotero.properties b/chrome/locale/uk-UA/zotero/zotero.properties
index 1551e4704b..b18903836e 100644
--- a/chrome/locale/uk-UA/zotero/zotero.properties
+++ b/chrome/locale/uk-UA/zotero/zotero.properties
@@ -417,6 +417,10 @@ pane.item.notes.ignoreMissingImage=Some note images are missing and cannot be co
 pane.item.attachments.rename.title=Нова назва:
 pane.item.attachments.rename.renameAssociatedFile=Перейменувати пов'язаний файл
 pane.item.attachments.rename.error=Виникла помилка при перейменуванні файлу.
+pane.item.attachments.rename.confirmExtChange.text1=Are you sure you want to change the file extension from “%S” to “%S”?
+pane.item.attachments.rename.confirmExtChange.text2=If you change the extension, the file may open with a different application outside of %S.
+pane.item.attachments.rename.confirmExtChange.keep=Keep %S
+pane.item.attachments.rename.confirmExtChange.change=Use %S
 pane.item.attachments.fileNotFound.title=Файл не знайдено
 pane.item.attachments.fileNotFound.text1=The attached file could not be found.
 pane.item.attachments.fileNotFound.text1.path=The attached file could not be found at the following path:
@@ -448,7 +452,6 @@ pane.item.tags.icon.user=Тег, що доданий користувачем
 pane.item.tags.icon.automatic=Тег, що доданий автоматично
 pane.item.tags.removeAll=Remove all tags from this item?
 pane.item.parentItem=Батьківський документ:
-pane.item.viewOnline.tooltip=Перейти до цього документа в мережі
 
 pane.context.noParent=No parent item
 pane.context.itemNotes=Item Notes
@@ -922,6 +925,8 @@ integration.removeBibEntry.body=Ви впевнені, що бажаєте ви
 
 integration.cited=Процитований
 integration.cited.loading=Завантажуються процитовані елементи...
+integration.openTabs=Open Documents
+integration.selectedItems=Selected Items
 integration.ibid=там же
 integration.emptyCitationWarning.title=Порожня цитата
 integration.emptyCitationWarning.body=Вибрана цитата буде порожня при поточному стилі. Ви впевнені, що бажаєте її додати?
diff --git a/chrome/locale/vi-VN/zotero/zotero.dtd b/chrome/locale/vi-VN/zotero/zotero.dtd
index 7368d4e335..74b8de30bc 100644
--- a/chrome/locale/vi-VN/zotero/zotero.dtd
+++ b/chrome/locale/vi-VN/zotero/zotero.dtd
@@ -111,7 +111,6 @@
 <!ENTITY zotero.item.textTransform.sentencecase "Viết hoa đầu câu">
 <!ENTITY zotero.item.creatorTransform.nameSwap "Swap First/Last">
 <!ENTITY zotero.item.creatorTransform.fixCase "Fix Case">
-<!ENTITY zotero.item.viewOnline "Xem trực tuyến">
 <!ENTITY zotero.item.copyAsURL "Sao chép thành URL">
 <!ENTITY zotero.item.deletePermanently "Xóa hoàn toàn...">
 
diff --git a/chrome/locale/vi-VN/zotero/zotero.properties b/chrome/locale/vi-VN/zotero/zotero.properties
index 93aae92b6b..12dc41c8e4 100644
--- a/chrome/locale/vi-VN/zotero/zotero.properties
+++ b/chrome/locale/vi-VN/zotero/zotero.properties
@@ -417,6 +417,10 @@ pane.item.notes.ignoreMissingImage=Some note images are missing and cannot be co
 pane.item.attachments.rename.title=Nhan đề mới:
 pane.item.attachments.rename.renameAssociatedFile=Đổi tên của tập tin liên đới
 pane.item.attachments.rename.error=Đã xảy ra một lỗi trong khi đổi tên tập tin.
+pane.item.attachments.rename.confirmExtChange.text1=Are you sure you want to change the file extension from “%S” to “%S”?
+pane.item.attachments.rename.confirmExtChange.text2=If you change the extension, the file may open with a different application outside of %S.
+pane.item.attachments.rename.confirmExtChange.keep=Keep %S
+pane.item.attachments.rename.confirmExtChange.change=Use %S
 pane.item.attachments.fileNotFound.title=Không tìm thấy tập tin
 pane.item.attachments.fileNotFound.text1=The attached file could not be found.
 pane.item.attachments.fileNotFound.text1.path=The attached file could not be found at the following path:
@@ -448,7 +452,6 @@ pane.item.tags.icon.user=Thẻ tạo bởi người dùng
 pane.item.tags.icon.automatic=Thẻ tạo tự động bởi Zotero
 pane.item.tags.removeAll=Remove all tags from this item?
 pane.item.parentItem=Biểu ghi Mẹ:
-pane.item.viewOnline.tooltip=Go to this item online
 
 pane.context.noParent=No parent item
 pane.context.itemNotes=Item Notes
@@ -922,6 +925,8 @@ integration.removeBibEntry.body=Are you sure you want to omit it from your bibli
 
 integration.cited=Cited
 integration.cited.loading=Loading Cited Items…
+integration.openTabs=Open Documents
+integration.selectedItems=Selected Items
 integration.ibid=ibid
 integration.emptyCitationWarning.title=Blank Citation
 integration.emptyCitationWarning.body=The citation you have specified would be empty in the currently selected style. Are you sure you want to add it?
diff --git a/chrome/locale/zh-CN/zotero/zotero.dtd b/chrome/locale/zh-CN/zotero/zotero.dtd
index 535282c9e3..c95faf0164 100644
--- a/chrome/locale/zh-CN/zotero/zotero.dtd
+++ b/chrome/locale/zh-CN/zotero/zotero.dtd
@@ -111,7 +111,6 @@
 <!ENTITY zotero.item.textTransform.sentencecase "句首大写">
 <!ENTITY zotero.item.creatorTransform.nameSwap "交换 名字/姓氏">
 <!ENTITY zotero.item.creatorTransform.fixCase "修正大小写">
-<!ENTITY zotero.item.viewOnline "在线查看">
 <!ENTITY zotero.item.copyAsURL "复制为网址">
 <!ENTITY zotero.item.deletePermanently "永久删除…">
 
diff --git a/chrome/locale/zh-CN/zotero/zotero.properties b/chrome/locale/zh-CN/zotero/zotero.properties
index ab01cc7629..f1b18b535d 100644
--- a/chrome/locale/zh-CN/zotero/zotero.properties
+++ b/chrome/locale/zh-CN/zotero/zotero.properties
@@ -417,6 +417,10 @@ pane.item.notes.ignoreMissingImage=一些笔记图像丢失无法复制
 pane.item.attachments.rename.title=新标题：
 pane.item.attachments.rename.renameAssociatedFile=重命名相关文件
 pane.item.attachments.rename.error=重命名文件时出错。
+pane.item.attachments.rename.confirmExtChange.text1=Are you sure you want to change the file extension from “%S” to “%S”?
+pane.item.attachments.rename.confirmExtChange.text2=If you change the extension, the file may open with a different application outside of %S.
+pane.item.attachments.rename.confirmExtChange.keep=Keep %S
+pane.item.attachments.rename.confirmExtChange.change=Use %S
 pane.item.attachments.fileNotFound.title=找不到文件
 pane.item.attachments.fileNotFound.text1=附件未找到。
 pane.item.attachments.fileNotFound.text1.path=在此路径无法找到附件：
@@ -448,7 +452,6 @@ pane.item.tags.icon.user=用户添加的标签
 pane.item.tags.icon.automatic=自动添加的标签
 pane.item.tags.removeAll=从此条目移除所有标签吗？
 pane.item.parentItem=父条目：
-pane.item.viewOnline.tooltip=在线查看此条目
 
 pane.context.noParent=没有父条目
 pane.context.itemNotes=条目笔记
@@ -922,6 +925,8 @@ integration.removeBibEntry.body=您确定要在参考文献表中排除此项？
 
 integration.cited=引用
 integration.cited.loading=正在加载引用的条目…
+integration.openTabs=Open Documents
+integration.selectedItems=Selected Items
 integration.ibid=同上
 integration.emptyCitationWarning.title=空白引注\n
 integration.emptyCitationWarning.body=您指定的引注在当前的样式下为空白，您确定要添加吗？
diff --git a/chrome/locale/zh-TW/zotero/zotero.dtd b/chrome/locale/zh-TW/zotero/zotero.dtd
index dbff416ea9..80224afc2f 100644
--- a/chrome/locale/zh-TW/zotero/zotero.dtd
+++ b/chrome/locale/zh-TW/zotero/zotero.dtd
@@ -111,7 +111,6 @@
 <!ENTITY zotero.item.textTransform.sentencecase "句首字母大小寫">
 <!ENTITY zotero.item.creatorTransform.nameSwap "交換前/後">
 <!ENTITY zotero.item.creatorTransform.fixCase "修正大小寫">
-<!ENTITY zotero.item.viewOnline "線上檢視">
 <!ENTITY zotero.item.copyAsURL "複製成 URL">
 <!ENTITY zotero.item.deletePermanently "刪除授權……">
 
diff --git a/chrome/locale/zh-TW/zotero/zotero.properties b/chrome/locale/zh-TW/zotero/zotero.properties
index 72ffc997c5..86c5183fa7 100644
--- a/chrome/locale/zh-TW/zotero/zotero.properties
+++ b/chrome/locale/zh-TW/zotero/zotero.properties
@@ -417,6 +417,10 @@ pane.item.notes.ignoreMissingImage=一些筆記圖片不見而無法複製。
 pane.item.attachments.rename.title=新標題：
 pane.item.attachments.rename.renameAssociatedFile=重新命名相關的檔案
 pane.item.attachments.rename.error=重新命名相關的檔案時出現錯誤。
+pane.item.attachments.rename.confirmExtChange.text1=Are you sure you want to change the file extension from “%S” to “%S”?
+pane.item.attachments.rename.confirmExtChange.text2=If you change the extension, the file may open with a different application outside of %S.
+pane.item.attachments.rename.confirmExtChange.keep=Keep %S
+pane.item.attachments.rename.confirmExtChange.change=Use %S
 pane.item.attachments.fileNotFound.title=找不到檔案
 pane.item.attachments.fileNotFound.text1=找不到附件檔案。
 pane.item.attachments.fileNotFound.text1.path=於後面路徑無法找到附件檔案：
@@ -448,7 +452,6 @@ pane.item.tags.icon.user=使用者加的標籤
 pane.item.tags.icon.automatic=自動加的標籤
 pane.item.tags.removeAll=移除這個項目中的全部標籤？
 pane.item.parentItem=上層項目：
-pane.item.viewOnline.tooltip=在線上查看此項目
 
 pane.context.noParent=沒有上層項目
 pane.context.itemNotes=項目筆記
@@ -922,6 +925,8 @@ integration.removeBibEntry.body=確定要自參考文獻表中移除它？
 
 integration.cited=被引用項目
 integration.cited.loading=正在載入被引用項目……
+integration.openTabs=Open Documents
+integration.selectedItems=Selected Items
 integration.ibid=同上
 integration.emptyCitationWarning.title=空白引用文獻
 integration.emptyCitationWarning.body=依目前所選樣式，所指定的引用文獻會是空白的。仍要把它加進去嗎？