Add Kit thing support to testutils. Simplify looking up contents of our fixtures in tests themselves.
Correct a whole bunch of bugs:
- Using Name instead of Thing for Kit Item/Room Assignment tables.
- Not importing lots of stuff from testutils.py.
Changed find_row() to:
- compare str(x) instead of x, because otherwise sometimes it's comparing a class object against a literal
- test for callables
Added get_proj()
Added room_lists_thing()
Added new set of tests on Kit.