72257 - Subfolder is bolded when a msg is filtered to parent folder., r=bienvenu, sr=hyatt

themes/modern/messenger/folderPane.css

@@ -31,6 +31,7 @@
 
 .folderTreeItem {
   list-style-image: url("chrome://messenger/skin/icons/folder-closed.gif");
+  font-weight: normal;
 }
 
 .folderTreeItem[selected="true"]