bug fix: Anomalie #101: err 500 changement de langue

src/Muzich/CoreBundle/Controller/CoreController.php

 use Muzich\CoreBundle\Entity\Element;
 use Symfony\Component\HttpFoundation\RedirectResponse;
 use Muzich\CoreBundle\Form\Search\ElementSearchForm;
+use Symfony\Component\Routing\Exception\ResourceNotFoundException;
 
 class CoreController extends Controller
 {
       $url_referer
     );
     
-    $params = $this->get('router')->match($url_referer);
+    try {
+      $params = $this->get('router')->match($url_referer.'552');
+    } catch (ResourceNotFoundException $exc) {
+      return $this->redirect($this->generateUrl('home', array('_locale' => $language)));
+    }
+
     $params['_locale'] = $language;
     $route = $params['_route'];
     unset($params['_route'], $params['_controller']);