fix path and class name

apps/calendar/ajax/events.php

@@ -7,7 +7,7 @@
  */
 
 require_once ('../../../lib/base.php');
-require_once(OC::$THIRDPARTYROOT . 'when/When.php');
+require_once('when/When.php');
 
 OC_JSON::checkLoggedIn();
 OC_JSON::checkAppEnabled('calendar');

apps/calendar/lib/app.php

@@ -8,8 +8,8 @@
  * 
  * This class manages our app actions
  */
-self::$l10n = new OC_L10N('calendar');
-self::$tz = OC_Preferences::getValue(OC_USER::getUser(), 'calendar', 'timezone', date_default_timezone_get());
+OC_Calendar_App::$l10n = new OC_L10N('calendar');
+OC_Calendar_App::$tz = OC_Preferences::getValue(OC_USER::getUser(), 'calendar', 'timezone', date_default_timezone_get());
 class OC_Calendar_App{
 	const CALENDAR = 'calendar';
 	const EVENT = 'event';