updates to requirements to use django-cms 3rc1
updates to product default sort order and sort display in admin
added index to sku field
clean up detail view slightly
fix sort order on images
Created migrations
created favorites model and template
Added the back-end logic to favorite/unfavorite products.
Refactor the favorite view a bit
Add django message support to favorites
Added ajax request to favorite and unfavorite
Both anonymous users and logged-in users can favorite products now.