adding xregexp to ACP header
support for "registered users" and "administrators" in access control (categories). Renamed "Administrators" group to "administrators", and made hidden
Merge branch 'master' of github.com:designcreateplay/NodeBB
Merge pull request #862 from akhoury/master

removed use_proxy config, cleaned-up some comments
fixes user tooltips on infinit load
Merge branch 'master' of https://github.com/designcreateplay/NodeBB
possible fix to #840
little tweak to user search show timing and 10 users, sort after slicing
Update categories.js
Merge branch 'master' of github.com:designcreateplay/NodeBB
Revert "possible fix to #840", please see #867

This reverts commit 1d666bf7f0ee85909da7908d3386704d9f41b83c.
fixed issue where calls to ajaxify.go were sending in a "template" argument that had since been removed, navigating back to NodeBB from an external link now no longer clobbers the History stack.
reduced the number of 'ajaxify.go' calls to one, in /src
fixed #867 - added proper detection so that onpopstate would not react if it was a proper page load
fix for mismatch between favourite count and number of people in favourited seT
Merge branch 'master' of https://github.com/designcreateplay/NodeBB
fixed issue where back button stopped ajaxifying internally.
Merge branch 'master' of github.com:designcreateplay/NodeBB
reverting change to User.search that added "timing" to the return of User.search. Such a change can only be made for 0.4.0, sorry!
restoring post/quote buttons pending template system fix for IFs