Django 1.7 needs to be explicitly setup in standalone scripts
Silence warnings and setup required middleware
Make Mock requests pretend to be HttpRequests
Fix a couple typos, broken links
Officially support 1.7
Remove INSTALLED_APPS overrides ...

They don't work with the app loading refactor
Move south migrations and create new 1.7 migrations
Exclude south_migrations from flake8 and coverage
Merge pull request #446 from rapidsms/feature/django-17-support

Support Django 1.7