Test for incategory as term query.

incategory is no longer a search like other searches - it now only
ignores case and accents.  Otherwise, you have to specify the category
exactly.  This prevented the problem where you would search for a
category like "movie" and get stuff in the "movie production techniques"
category.

Bug: 53415
Change-Id: I48190fc06cfa4794150273c8d6804c0ffe8b9235