Fixes #232 : reattach entity to Session to avoid LazyException.

Clearly, what should be performed is to use fj Stream or Array with TypeTraitController.update() but no more time left to process this.
Also, Utilitaires.getCampagneEnServ() should use NullObject design pattern to avoid further NPE.
cleaning : remove unexisting method call from view to avoid MethodNotFoundException 1/3
cleaning : remove unexisting method call from view to avoid MethodNotFoundException 2/3
cleaning : remove unexisting method call from view to avoid MethodNotFoundException 3/3