Added Models for persisting stats (StatusCount, DetailedStatus)
Promoted mongo_access.py from a few functions to an actual class.
Changes in views.py reflect the 'classification' of mongo access.
Added MONGO_HOST setting to settings.py and made the small adjustment in the __init__ of MongoAccess to accommodate this new setting.
Separated data gathering from data display.

Using crons to obtain and persist data instead of pulling it @ the time of the actual request.
Added option to use cache in MongoAccess.get_status_counts