navbar 7.x-1.5

Issue #2240283 by eshta: Fix missing border shadow in admin in specific themes.
Issue #2199755 by Devin Carlson: Declare navbar hooks in hook_hook_info.
Issue #1937754 by hass, smd_ksu, sylus, brantwynn, artemln: Fix tableHeaderOffset setting not set causing sticky header overlayed by navbar AJAX errors.
Issue #2183753 by freality: Fix displace scroll offset for IE.
Store a reference to a menu item's box element in .data() so that it needn't be found again later.
Be specific about applying borders to first-level-only menu items in the horizontal orientation.
Added findItem callback to allow implementing scripts to provide a finding function for submenu items.
Fix for jQuery 1.4.x support. fn.closest does not support jQuery object arguments; just selectors.
Inserting a link into a menu after the first-pass of navbarMenu processing resulting in the new link being unstyled. Updated the navbarMenu plugin to iterate over all links in a menu and process any that remain unprocessed.
Allow for a wrapper element around the menu item just inside an li element.
Issue #2173041 by joelpittet: Menu item hover shows i beam instead of pointer.