Comment 22 for bug 408361

Icons are not displayed be default in either context menus, dialogue buttons or firefox bookmarks menu

Upstream is setting these two options to false by default.
http://bugzilla.gnome.org/show_bug.cgi?id=557469
http://bugzilla.gnome.org/show_bug.cgi?id=583352

To ensure that *essential* icons are displayed, relevant applications are to be patched.

Design Suggestion:
Meanwhile, now that we have flicked the switch and set icons to be off by default, we need to fix relevant applications to match. You can help! Whenever you see a program that has menu items for objects where those menu items now don't include icons, report a bug on the program that it should use always-show-icons for those particular items. And conversely, whenever you see a program with icons on menu items for things that aren't objects, report a bug that the icons should be removed.

Examples of menu items that count as objects, and should therefore have icons: applications, documents (including any recent documents in a "File" menu), disks, partitions, folders, bookmarks, history items, IM accounts, IM statuses, user accounts.

Examples of menu items that don't count as objects, and should therefore *not* have icons: openable windows (e.g. "Edit" > "Preferences" or "Go" > "Edit Bookmarks"), toolbars (e.g. "View" > "Toolbars" > anything), actions (e.g. "Go" > "Back").

Unlike menus in Windows, whether a menu item has an equivalent toolbar button is irrelevant to whether the menu item should have an icon.
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Kindly identify the applications that need icons and report it here, add them by using "Also affects project".