Updated disabled check to allow for use of <a href="#">

Users of the drupal module special_menu_items find that its option of using <span> break the Superfish themeing.  Using <a href="#"> works except for smallscreen.js.  This update allows for both options.
Merge branch 'master' of git://github.com/aburnsni/Superfish-for-Drupal into aburnsni-master
Merge branch 'aburnsni-master'