zotonic/zotonic — pull request #768 by mawuli-ypa (2014-05-27 16:17:12+00:00)
Title: Add ``filter_not`` filter for inversely filtering a list.

I have implemented a ``filter_not`` filter for filtering a list on the value of a property, either on absence or inequality.

Please ignore this pull request if there is a better or another way of doing inverse filtering.