Replace HomeSettings with Presence Model class. Replace SiteSettings with
Site Model class. Derive Group Model class from Presence, adding the "home
page settings" properties in a Melange site presence to every Group.
Patch by: Todd Larsen
#!/usr/bin/env python
"""
Daily cleanup job.
Can be run as a cronjob to clean out old data from the database (only expired
sessions at the moment).
"""
from django.core import management
if __name__ == "__main__":
management.call_command('cleanup')