Added test case to ensure existing reverse 1-to-many relations don't get erased.
Fixed test dependencies in setup.py.
Changes to make tests run faster. Also organized requirements.
Fixed __unicode__ method in test model.
Used mock library to avoid some time.sleep() calls.
Added on-disk sqlite back for basic tests, which fail with in-memory sqlite.
Fixed manage_customuser.py, shut off warnings in log.
Fixed settings in merge.