Initial work to determine whether or not a lease has charge gaps, and when the lease has been charged through.

git-svn-id: file:///svn-source/pmgr/branches/invoice_receipt_20090629@286 97e9348a-65ac-dc4b-aefc-98561f571b83

site/controllers/leases_controller.php

@@ -306,6 +306,9 @@ class LeasesController extends AppController {
 	     )
        );
 
+    $this->set('charge_gaps', $this->Lease->rentChargeGaps($id));
+    $this->set('charge_through', $this->Lease->rentChargeThrough($id));
+
     // Obtain the overall lease balance
     $this->Lease->statsMerge($lease['Lease'],
 			     array('stats' => $this->Lease->stats($id)));