public static void removeVote(int vote_id)
        {
            vote v = context.votes.Where(x => x.id_vote == vote_id).SingleOrDefault();

            context.votes.Remove(v);
            context.SaveChanges();
        }
        public static vote getVote(int user_id, int project_id)
        {
            vote v = context.votes.Where(x => x.user_id == user_id && x.project_id == project_id).SingleOrDefault();

            foreach (file f in v.project.files)
            {
                f.SerializeVirtualProperties = false;
            }
            return(v);
        }
        public static vote postVote(int user_id, int project_id)
        {
            vote v = new vote();

            v.id_vote    = 0;
            v.date       = DateTime.Now;
            v.user_id    = user_id;
            v.project_id = project_id;
            context.votes.Add(v);
            context.SaveChanges();
            return(context.votes.Where(x => x.project_id == v.project_id && x.user_id == v.user_id).SingleOrDefault());
        }