Added ability to create a new customer directly from the move in operation.

git-svn-id: file:///svn-source/pmgr/branches/pre_0.1_work_20090819@760 97e9348a-65ac-dc4b-aefc-98561f571b83

site/controllers/units_controller.php

@@ -155,7 +155,7 @@ class UnitsController extends AppController {
     $customer = array();
     $unit = array();
 
-    if (isset($id)) {
+    if (!empty($id)) {
       $this->Unit->recursive = -1;
       $unit = current($this->Unit->read(null, $id));
     }