Update sample project to work with Django 1.5

I needed a current sample project to toy with Dotcloud. Maybe it's of use to you guys?

* Use new Django default directory structure
* Use different settings as recommend by Two Scoops of Django to be able
  to have a local version running, too
* Remove redis as it wasn't used
* Move mkadmin.py and createdb.py in scripts/ subdirectory
* Update mkadmin.py to use Django's support for custom User models