public ActionResult Index(MemberViewModel mvm)
        {
            Member m = new Member();

            m.created     = DateTime.Now;
            m.dateofbirth = mvm.Geburtsdatum;
            m.email       = mvm.Email;
            //Klartextpasswort mittels GetHash für Datenbank Haschen
            byte[] tmppw = mvm.GetHash(mvm.Klartextpasswort);
            m.password = tmppw;
            db.Members.Add(m);
            db.SaveChanges();
            return(RedirectToAction("Index"));
        }