public IEnumerable <UserVM> GetAdmin()
        {
            var normUser =
                (from u in db.Users
                 where u.Role == "admin"
                 select u).ToList();
            List <UserVM> userVmList = new List <UserVM>();

            foreach (var user in normUser)
            {
                userVmList.Add(ConvertClass.UserToVM(user));
            }
            return(userVmList);
        }