Merge pull request #771 from glic3rinu/master

Fixed IPv6 support for urlize_quoted_links template tag
Don't have the ModelSerializer trust deserialized objects to not have redefine bool()ean-ness.

If the model we're using the ModelSerializer for has redefined methods that act as a boolean (__bool__ or __len__), it may not return the object even though it is_valid(), and should.
Fix bug with inactive user accessing OAuth
Merge branch 'master' of https://github.com/tomchristie/django-rest-framework
Fix the fact that InvalidConsumerError and InvalidTokenError wasn't imported correctly from oauth_provider
Merge pull request #776 from atlefren/master

Proper import of errors from oauth_provider
Added @atlefren for bugfix in #776
Update release-notes.md
Merge pull request #772 from preed/preed/ModelSerializer-bool-fix

Don't have the ModelSerializer trust deserialized objects to not have re...
Added @preed for bugfix #772. Thanks!
Update release-notes.md
Added break_long_headers on templatetags and base template