Step 2 of moving to new seeding model. Create Seeder class, which abstracts some seeding. Move user to Seeder class, and make new OrganizationSeeder class. If people like this, I'll finish the rest soon. Patch by: Dan Bentley

#!/usr/bin/env python
from django.core import management

if __name__ == "__main__":
    management.execute_from_command_line()