Use library icon for New Library button, and add more HiDPI icons

Includes HiDPI icons for feed rows, which weren't showing up before

chrome/content/zotero/xpcom/collectionTreeView.js

@@ -732,10 +732,9 @@ Zotero.CollectionTreeView.prototype.getImageSrc = function(row, col)
 			/*
 			if (treeRow.ref.updating) {
 				collectionType += '-updating';
-			} else if (treeRow.ref.lastCheckError) {
+			} else */if (treeRow.ref.lastCheckError) {
 				collectionType += '-error';
 			}
-			*/
 			break;
 		
 		case 'trash':

chrome/content/zotero/xpcom/data/cachedTypes.js

@@ -467,6 +467,7 @@ Zotero.ItemTypes = new function() {
 			case 'bookSection':
 			case 'computerProgram':
 			case 'film':
+			case 'forumPost':
 			case 'instantMessage':
 			case 'interview':
 			case 'journalArticle':
@@ -487,7 +488,6 @@ Zotero.ItemTypes = new function() {
 			case 'dictionaryEntry':
 			case 'email':
 			case 'encyclopediaArticle':
-			case 'forumPost':
 			case 'hearing':
 			case 'manuscript':
 			case 'map':

chrome/skin/default/zotero/overlay.css

@@ -308,7 +308,7 @@
 
 #zotero-tb-library-add-menu
 {
-	list-style-image: url('chrome://zotero/skin/group_add.png');
+	list-style-image: url('chrome://zotero/skin/library_add.png');
 }
 
 
@@ -703,6 +703,8 @@
 /* BEGIN 2X BLOCK -- DO NOT EDIT MANUALLY -- USE 2XIZE */
 @media (min-resolution: 1.5dppx) {
 	#zotero-tb-collection-add { list-style-image: url('chrome://zotero/skin/toolbar-collection-add@2x.png'); }
+	.zotero-menuitem-new-feed { list-style-image: url('chrome://zotero/skin/toolbar-feed-add@2x.png'); }
+	#zotero-tb-library-add-menu { list-style-image: url('chrome://zotero/skin/library_add@2x.png'); }
 	#zotero-tb-actions-menu { list-style-image: url('chrome://zotero/skin/cog@2x.png'); }
 	#zotero-tb-add { list-style-image: url('chrome://zotero/skin/toolbar-item-add@2x.png'); }
 	#zotero-tb-attachment-add { list-style-image: url('chrome://zotero/skin/attach@2x.png'); }
@@ -713,6 +715,8 @@
 	.zotero-menuitem-show-unfiled { list-style-image: url('chrome://zotero/skin/treesource-unfiled@2x.png'); }
 	.zotero-menuitem-new-collection { list-style-image: url('chrome://zotero/skin/toolbar-collection-add@2x.png'); }
 	.zotero-menuitem-edit-collection { list-style-image: url('chrome://zotero/skin/toolbar-collection-edit@2x.png'); }
+	.zotero-menuitem-edit-feed { list-style-image: url('chrome://zotero/skin/toolbar-feed-edit@2x.png'); }
+	.zotero-menuitem-refresh-feed { list-style-image: url('chrome://zotero/skin/arrow_refresh@2x.png'); }
 	.zotero-menuitem-delete-collection { list-style-image: url('chrome://zotero/skin/toolbar-collection-delete@2x.png'); }
 	.zotero-menuitem-show-in-library { list-style-image: url('chrome://zotero/skin/treesource-library@2x.png'); }
 	.zotero-menuitem-move-to-trash { list-style-image: url('chrome://zotero/skin/treesource-trash-full@2x.png'); }
@@ -725,7 +729,7 @@
 	#zotero-tb-advanced-search { list-style-image: url('chrome://zotero/skin/toolbar-advanced-search@2x.png'); }
 	#zotero-tb-locate { list-style-image: url('chrome://zotero/skin/toolbar-go-arrow@2x.png'); }
 	#zotero-tb-sync-storage-cancel { list-style-image: url(chrome://zotero/skin/control_stop_blue@2x.png); margin-right: 0; }
-	#zotero-tb-sync-error, #zotero-tb-sync-error[mode=warning] { list-style-image: url(chrome://zotero/skin/error@2x.png); }
-	#zotero-tb-sync-error[mode=error] { list-style-image: url(chrome://zotero/skin/exclamation@2x.png); }
+	#zotero-tb-sync-error  { list-style-image: url(chrome://zotero/skin/error@2x.png); }
+	#zotero-tb-sync-error[state=warning]  { list-style-image: url(chrome://zotero/skin/warning@2x.png); }
 	#zotero-pane-stack[fullscreenmode="true"] #zotero-tb-fullscreen { list-style-image: url('chrome://zotero/skin/toolbar-fullscreen-top@2x.png'); }
 }