Clean up the sticky menu and responsive tweaks JS:

- More descriptive names.
- Share cached jQuery elements.
- Fix re-enabling of touch events on the admin menu.
- Fix disabling/enabling of UI Sortable.
Props tollmanz, props sanchothefat, see #26086, fixes #26088.

git-svn-id: https://develop.svn.wordpress.org/trunk@26402 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/css/admin-bar.css

@@ -945,7 +945,7 @@
 		position: absolute;
 	}
 	
-	#moby6-overlay {
+	#wp-responsive-overlay {
 		position: fixed;
 		top: 0;
 		left: 0;
@@ -979,4 +979,4 @@
 	#wpadminbar #wp-admin-bar-wp-logo {
 		display: none;
 	}
-}
+}