Renamed Donors, Items, Purchases, and Auction to donors, items, purchases, and auction.  Next project is to change city, state, and zip to one field in the sql table for donors.
Had to change the local variable console to be cnsole because I renamed Console.py to console.py.
Changed "INVOICE" to "SHOPPING CART" on the buyer's cart page.
Renamed the toolbooks to be lower case names: buyerstoolbook, donrs, items, purchases, etc.
Refactored RegularExpression.py to regularexpression.py.  I'm ready to move on to changing donor city, state, and zip.
Refactored Dialogs.py to dialogs.py
Merge branch 'develop' of https://github.com/zacktu/sam into develop