Move oauthlib calls to a separate class
oauthlib is now completely wrapper in backends module
Fixed bug in OAuthLib mixin error handling, tests added
PY3 compatibility for urlparse import
Use bytes property with UUID objects
Fix PY3 urlencode import
Add unicode_literals import to test modules
Fix basic auth header creation in tests for python 3
Fixed json loads in python3
Fixed unpredictable behaviors in tests
Add tox.ini
Add helper function for django 1.4 compatibility
Use User model from compatibility layer
Extended support to django 1.4 and python 3.3
Move requests import inside view function
Merge branch 'core-backends'