Core Cleanup: Day 2

Another day. Another commit. I got a late start this evening due to a trip to the computer store and Chipotle. I feel like I've eaten a brick.

The pod for the providers is done. I've added the user key to Cart/Wishlist providers search/delete methods. Most of of the schema classes have pod now as well. Just the Cart/Wishlist/Order/Item classes to go and that will be done. After that, one to the object classes. I should be done with pod in no time. [Famous last words.]