Merge branch 'hotfix/none_scope'
Swap simplejson out for stdlib json
Merge pull request #12 from ghickman/master

Swap simplejson out for stdlib json in the testsites api test
Tidy up exception handling

Use new style variable assignment to avoid issues with python version
support and remove variable assignment when it's not being used.
Merge branch 'master' of git://github.com/hiidef/oauth2app
Add django nose to the example project
Stub out the authenticate tests
Merge pull request #14 from ghickman/3a100951

Tidy up Exception Handling
Merge pull request #15 from ghickman/73395d97

Add django-nose and the test stubs
Issue a new access token in refreshing flow. According to chapter 6 of current oauth2 draft.
Merge pull request #30 from frutik/master

Issue a new access token in refreshing flow
Prefer simplejson, but fall back to json
Fix absolute_http_url_re import with fallback
Fix test failures
Enable use of custom user models for django1.5+
merged from koordinates/django1.5