added methods to decorators for account and transaction to get account, user, and added attr_accessible back in
added feature for admins to reverse demerit transaction, by making use of the Demerit model and creating a demerit each time the account is credited. When the admin reverses a demerit, that db object is marked as resolved and an opposite transaction is credited to that users demerit account, thus showing up on their transaction list for that account. creaed view with controls and admin navs