Added Django-RQ tests
Cleaned up testing code, split into fixture
Add django-pq
dont do database setup in fixtures

https://github.com/pelme/pytest_django/issues/53#issuecomment-24470229
make testing database settings more succint
dont use module level db requires,
change to module level transaction based database requirements
Merge pull request #13 from saulshanabrook/testing/contrib

Add tests for contrib libraries