Fix Tests for Python3

Also cleanup a bunch of unnecessary testing in travis.yml.

Python 3 Support

Merge pull request #61 from edx/BOM-64-2

BOM-64

Added refresh token factory

Merge pull request #49 from edx/ahsan/update_version

update version

Updated OAuth validation error messages

Updated OAuth validation error messages

Note: This release did not include 459308c which was intended for the edx-platform hotfix.

Single Logout Support

Authorized clients are now stored in the session to facilitate single logout.

Added support for edx-django-oauth2-provider 1.x

Merge pull request #39 from edx/clintonb/requirements-update

Added support for edx-django-oauth2-provider 1.x

0.5.7

Upgraded factory_boy and Django_nose for Django 1.8

0.5.6

Idempotent Client creation.

0.5.5

Includes oauth2-provider's tests module.

0.5.4

Management commands support Django 1.4.