Rewrite as friendly frontend to django-otp

* Batteries included (views and templates)
* User-friendly login view
* User-friendly setup wizard
* Backup phone numbers
* Backup tokens
* Django 1.4, 1.5 and 1.6 compatible
* Twilio gateway for delivering tokens to phone numbers
* Testing with tox ♥️
* Optional admin login patching
* Proper Python 3 support (no 2to3)