game timeouts

[clach04]

Implemented by dfc7a32c0379c262f67c66f1a076ccd90cefbd14 NOTE this only handles it for on game view "events".

Consider a poor mans Django cron that uses any view event to check a timer (without the need for server scheduling):

• http://code.google.com/p/django-poormanscron/
• http://code.google.com/p/django-cron/
  • https://github.com/BBB/django-poormanscron