Add StartTime and EndTime virtual fields for backwards compatability

web/api/app/Model/Event.php

@@ -31,6 +31,10 @@ class Event extends AppModel {
  */
 	public $displayField = 'Name';
 
+  public $virtualFields = array(
+    'StartTime' => 'StartDateTime',
+    'EndTime' => 'EndDateTime'
+  );
 
 	//The Associations below have been created with all possible keys, those that are not needed can be removed