Update drupal contrib modules.

advanced_help, entity, libraries, module_filter, rules.
Updated contrib admin themes tao/rubik.
Reapplied 597ddeef0725.

By rblanker: Fixed Rubik theme not to use hidden copy of the action form
on the same page.
Merge pull request #127 from arjenk/update/contrib-modules

Your pull request has been merged, thanks Bro.