[BUG] Router incorrectly handles numeric controllers/actions

$router->add('/admin/:controller', [
  'module'    => 'test',
  'controller'  => 1,
  'action'    => 'index',
]);

$router->add('/admin/:controller/:action', [
  'module'    => 'test',
  'controller'  => 1,
  'action'    => 2,
]);

• /admin/controller -- uses Controller controller and the default action, all good
• /admin/123 -- uses the default controller and default action instead of 404
• /admin/controller/edit -- uses Controller controller and edit action, all good
• /admin/controller/123 -- uses Controller controller and the default action instead of 404

http://forum.phalconphp.com/discussion/1288/-router#C4617