public function supArticleAction(Request $request, Article $article)
 {
     $id = $article->getCategorie()->getId();
     $em = $this->getDoctrine()->getManager();
     $categorie = $em->getRepository('WSAdminLTEBundle:Categorie')->findOneBy(array('id' => $id));
     $em->remove($article);
     $em->flush();
     $request->getSession()->getFlashBag()->add('success', ' Suppression effectuée.');
     return $this->redirect($this->generateUrl('adminLTE_listeArticle', array('slug' => $categorie->getSlug())));
 }