tentative working Django 1.7.1 (bug 935538)

* wip don't merge
* removed funfactory and test_utils

- [x] tests seem a bit slower, mocking might be failing
- [x] need to check on the django-tastypie pinning
- [x] need to run baked
I don't see much copied over from https://github.com/mozilla/funfactory/blob/master/funfactory/settings_base.py Do we need anything?