Implemented a mechanism to track customer overpayments (credits). Also implemented a reconciling algorithm, matching payments to charges. Preliminary testing seems to show that it works well. More thorough testing required.

git-svn-id: file:///svn-source/pmgr/branches/yafr_20090716/site@392 97e9348a-65ac-dc4b-aefc-98561f571b83

app_model.php

@@ -100,6 +100,9 @@ class AppModel extends Model {
       $query['link'] = array();
     if (!$link && !isset($query['contain']))
       $query['contain'] = array();
+
+    // In case caller expects query to come back
+    return $query;
   }