joomla/jissues — pull request #578 by allenzhao (2014-12-09 14:09:47+00:00)
Title: Add the 'No category' selection; Ref #538

This should add the No category selection to category filter.
Please review @elkuku @b2z
Thanks!

PS: If I miss something while I'm not active, please let me know. Sorry for the late implementation of this function