Set up the system
Django basic model handling.
Support django 1.5.
Merge branch 'set_up'
Merge branch 'django_basic_model_handling'
Include south in to installed applications
Group todo notes in groups.
Include south migrations to repository.
Merge branch 'migration_south'
Migrate DB for authentication support.
User authentication + test updates
Add two management commands
 * todos_per_list
 * todos_per_user