Kunena30/Joomla30 Backend: Filter implementation ranks and smilies.

May need work, first pass implementation.
Kunena30/Joomla30 Backend: Filter implementation ranks and smilies.

First implementation did not work because we were only filtering what was being displayed. Needed to use a direct SQL implementation.
Merge pull request #1380 from coder4life/master

Kunena30/Joomla30 Backend: Filter implementation ranks and smilies.