Fix a CSS class
Fix versionned dependency on mailman in the spec file
Update the docs
Migrate to class-based generic views

https://docs.djangoproject.com/en/1.4/topics/generic-views-migration/#mimetype
Required by Django >= 1.5
Switch to the new-style "url" tag

Required by Django >= 1.5
https://docs.djangoproject.com/en/1.5/releases/1.5/
More Django 1.5 compatibility fixes
Update REST API to new KittyStore backend

* Move to use APIView as Resource base
* Add List Resource to show all lists
* Custom serialize Thread, Email and List objects