Bug 356546: Bookmark import/export dialogs shouldn't have colons, should have caps, r=gavin

browser/locales/en-US/chrome/browser/bookmarks/bookmarks.properties

@@ -164,8 +164,8 @@ ImportedIEFavorites = Imported IE Favorites
 ImportedIEStaticFavorites = Imported IE Favorites
 ImportedNetPositiveBookmarks = Imported NetPositive Bookmarks                   
 
-SelectImport = Import bookmark file:                                            
-EnterExport = Export bookmark file:                                             
+SelectImport = Import Bookmarks File
+EnterExport = Export Bookmarks File
 
 search_button_label = Find