Check returns for 15 days
Added test data for purchases
Fixed bug when returning one item, stock does not update. Also updated db tables so that PurchaseItem references Order like it should.
Added on delete cascade to purchaseitem
Returning items now delete the PurchaseItem tuples associated with it. When returning the entire order, the Order tuple gets deleted as well.
commiting just in case
Implemented single item return properly
Implemented full returns properly
Display all returns
Added view purchase page to clerk menu and added homepage for clerks
Added reasonable restrictions to credit card and month info
Added customer name to View Purchase page
Merge branch 'awesomesauce'