Move "Print" to zotero.ftl

Follow-up to d606644a78

chrome/content/zotero/reader.xhtml

@@ -98,7 +98,7 @@
 			<menupopup id="menu_FilePopup">
 				<!-- TODO: Localize -->
 				<menuitem class="menu-type-reader pdf" label="&zotero.general.saveAs;" oncommand="reader.export()"/>
-				<menuitem label="&zotero.general.print;" oncommand="reader.print()"/>
+				<menuitem data-l10n-id="menu-print" oncommand="reader.print()"/>
 				<menuitem label="&zotero.items.menu.showInLibrary;" oncommand="reader.showInLibrary()"/>
 				<menuseparator/>
 				<menuitem id="menu_close" label="&closeCmd.label;" key="key_close"

chrome/content/zotero/zoteroPane.xhtml

@@ -280,7 +280,7 @@
 									label="&zotero.general.saveAs;"
 									oncommand="ZoteroStandalone.currentReader.export()"/>
 							<menuseparator class="menu-type-reader pdf"/>
-							<menuitem label="&zotero.general.print;" class="menu-type-reader" oncommand="ZoteroStandalone.currentReader.print()"/>
+							<menuitem data-l10n-id="menu-print" class="menu-type-reader" oncommand="ZoteroStandalone.currentReader.print()"/>
 							<menuitem label="&zotero.items.menu.showInLibrary;" class="menu-type-reader" oncommand="ZoteroStandalone.currentReader.showInLibrary()"/>
 							<menuseparator/>
 							<menuitem id="menu_close" class="menu-type-library" label="&closeCmd.label;" key="key_close"

chrome/locale/en-US/zotero/zotero.dtd

@@ -23,7 +23,6 @@
 <!ENTITY zotero.general.bigger                             "Bigger">
 <!ENTITY zotero.general.smaller                            "Smaller">
 <!ENTITY zotero.general.reset                              "Reset">
-<!ENTITY zotero.general.print                              "Print">
 
 
 <!ENTITY zotero.errorReport.title							"Zotero Error Report">

chrome/locale/en-US/zotero/zotero.ftl

@@ -1,3 +1,8 @@
+general-print = Print
+
+menu-print =
+    .label = { general-print }
+
 menu-density =
     .label = Density