First pass at a charge waiver implementation. It hasn't been tested but for a tiny bit.

git-svn-id: file:///svn-source/pmgr/branches/yafr_20090716/site@471 97e9348a-65ac-dc4b-aefc-98561f571b83

models/account.php

@@ -132,6 +132,7 @@ class Account extends AppModel {
   function checkAccountID()             { return $this->nameToID('Check'); }
   function moneyOrderAccountID()        { return $this->nameToID('Money Order'); }
   function concessionAccountID()        { return $this->nameToID('Concession'); }
+  function waiverAccountID()            { return $this->nameToID('Waiver'); }
   function pettyCashAccountID()         { return $this->nameToID('Petty Cash'); }
   function invoiceAccountID()           { return $this->nameToID('Invoice'); }
   function receiptAccountID()           { return $this->nameToID('Receipt'); }