Extract core urls to the app's urlconf.
Extract subscriptions urls to the app's urlconf.
Move permissive routes to the end of urlconf
Avoid hardcoded urls
Register Subscription model on admin
Add list_display
Add date_hiararchy
Add search_fields
Add subscribed_today
Add short_description
Add boolean
Add list_filter
Set pt-BR and local timezone
Install south
Set SOUTH_TESTS_MIGRATE to False
Use south for subscriptions
Test existence of paid attribute
Add paid field
Exclude paid from modelform
Add paid migration