Update views and such to reflect changes to Game model

- Remove migration 0007
- Clean up Game model a little
- Fix a few little bugs in Game model
- Add inline gamescore admin
- Remove GameScore admin, rely on inline within GameAdmin
- Add migration 0007 for new Game/Gamescore models
- Add GameScore to models.__init__ (It makes the django shell happy)
- Update GameScore model's style and set related_name for Game FK
- Fix get_queryset for GameListView
- Fix template for GameListView
- Refactor game templates a bit
- Update template for GameDetailView
- Update GameDetailView
- Update GameFactory and create GameScoreFactory
- Update unittests to reflect Game model changes