Translation Registration Problems

There are some race condition-like problems with the auto-discovery and registration of the admin and django-modeltranslation made even messier with Mezzanine's LazyAdminSite. This moves the admin registration pieces out of the project/translation file and handles it separately with a new app. Tested locally with Gunicorn 18.0 and the registration problems were resolved. There was some discussion of just removing modeltranslation for the short term and I can make another PR to do that.