@RequestMapping(value = "doajoutClasse", method = RequestMethod.POST)
public String doajoutClasse(FormAjoutClasse formAjout,
BindingResult bindResult, Model model) {
Classe classe = new Classe();
classe.setNom(formAjout.getNom());
manager.addClasse(classe);
return "redirect:/app/admin/logiciel";
}