// INDEX: Friend
        public ActionResult Index()
        {
            List <Friend> friends = repository.ListFriends();

            List <Friend> todayBirthDay = friendsHelpers.ListToDayBirthday(friends);

            ViewBag.FriendsOrderedByBirthDate = friendsHelpers.OrderFriendsByBirthDate(friends);

            ViewBag.dateNow = DateTime.Now;

            return(View(
                       todayBirthDay.Select(el => new FriendViewModel
            {
                FriendId = el.FriendId,
                FriendName = el.FriendName,
                FriendLastName = el.FriendLastName,
                FriendBirthDate = el.FriendBirthDate,
            })));
        }