setting up django-grappelli and fixes #164

this commit just enables django-grappelli with the most
basic of settings
Upgrade bleach
Use print function everywhere
Stub out Steve API tests for Python 3
Import reload (not bult-in in Python 3)
Use next() for generators (for future-proofing)
Import urllib.parse in Python 3 (instead of urllib)
Use self.assert[Not]Contains to fix unicode errors
Use text_type instead of unicode
Only compare bytestring to response.content
Use smart_text to convert bytestrings to unicode

@jezdez this is the problem I was talking about
Remove unnecessary browserid_info template tag
Support Python 2 and 3 for models
Remove 2.6 support and add 3.3 support
Remove non-existant context processor
Add Django 1.7 to tox file
Upgrade eadred and django-browserid :fireworks:
Fix draft mode message
Merge pull request #225 from treyhunner/python3

Add support for Python 3
Remove errant print statement