RSVPs seem to be created now, just gotta fix CancelrsvpAction

plugins/Event/forms/rsvp.php

@@ -28,11 +28,7 @@
  * @link      http://status.net/
  */
 
-if (!defined('STATUSNET')) {
-    // This check helps protect against security problems;
-    // your code file can't be executed directly from the web.
-    exit(1);
-}
+if (!defined('GNUSOCIAL')) { exit(1); }
 
 /**
  * A form to RSVP for an event
@@ -48,7 +44,7 @@ class RSVPForm extends Form
 {
     protected $event = null;
 
-    function __construct($event, $out=null)
+    function __construct(Happening $event, $out=null)
     {
         parent::__construct($out);
         $this->event = $event;