! As per #708 this should fix some of the cases where queries were being...

... made expecting to be case insensitively but weren't; not all systems treat LIKE as a case insensitive operator. There are still some in the search backend and related to banning which will require further examination, but this should resolve the rest. Needs more testing, too.

Signed-off-by: Peter Spicer <sleeping@myperch.org>