Make older mobile browsers and IE7 usable:

- Text labels in the toolbar.
- Image icons in the visual editor.
- Some IE7 structural css fixes.
Fixes #26369.

git-svn-id: https://develop.svn.wordpress.org/trunk@26819 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-admin/css/wp-admin.css

@@ -1904,8 +1904,21 @@ div.wp-menu-image:before {
 	height: 34px;
 }
 
-/* Sticky admin menu */
+/* No @font-face support */
+.no-font-face #adminmenu .wp-menu-image {
+	display: none;
+}
 
+.no-font-face #adminmenu div.wp-menu-name {
+	padding: 8px 12px;
+}
+
+.no-font-face.auto-fold #adminmenu .wp-menu-name {
+	margin-left: 0;
+}
+/* End no @font-face support */
+
+/* Sticky admin menu */
 .sticky-menu #adminmenuwrap {
 	position: fixed;
 	z-index: 99; /* Match the z-index of .wp-submenu to ensure flyout menus don't appear underneath main column elements */