Revert "Security: Temporary grant all permissions"

This reverts commit 9b7e75a616.

Patching function hasPermission is not enough. A fix will follow.

library/Icinga/Web/Controller/ActionController.php

@@ -192,7 +192,6 @@ class ActionController extends Zend_Controller_Action
      */
     public function assertPermission($name)
     {
-        return;
         if (! $this->Auth()->hasPermission($name)) {
             // TODO: Shall this be an Auth Exception? Or a 404?
             throw new IcingaException(