Always load the apps before trying to match a route

lib/base.php

@@ -556,6 +556,7 @@ class OC {
 
 		if (!self::$CLI) {
 			try {
+				OC_App::loadApps();
 				OC::getRouter()->match(OC_Request::getPathInfo());
 				return;
 			} catch (Symfony\Component\Routing\Exception\ResourceNotFoundException $e) {