Use ObjectDoesNotExist
Make the admin create a proper admin
Allow multiple runs of the initialize_database command
Don't fail on the initialize_database command
make working with the admin a little easier
Don't die when an invalid date is passed in to get_week_count()
Merge branch 'master' into devel

Conflicts:
	education/admin.py
	education/management/commands/initialize_database.py
	education/models/utils.py