Set a KEY_PREFIX for the Redis cache, so that we don't get collisions when running multiple sites on one server
update note in settings/base.py to clarify that USE_L10N = True is now supported but doesn't display friendly dates
Use the cached template loader in production

see https://github.com/torchbox/wagtail/pull/196
Subapps of wagtailadmin now register their urlconfs via hooks, so no need to declare them in urls.py