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
Hmm, really? What would happen in that case? It would use `my_experiemental_settings`? Considering that `DJANGO_SETTINGS_MODULE` is set quite a lot, it feels like that would break lots of testing for people.