Django registration

Adds Registration through the django-registration-redux package.

Uses sample templates from django-registration-redux for now.
Maybe it's time to start thinking about compiling static assets to somewhere totally outside of the source tree for the code. Something like `/var/www/static/`. I bet @hectcastro has some opinions about this. The fact that you have to gitignore it is indicative of the problem. It's not source material, it's produced material.