public ActionResult Timetables()
        {
            IEnumerable <TimetableDTO> timetableDtos = timetableService.GetTimetables();
            var mapper     = new MapperConfiguration(cfg => cfg.CreateMap <TimetableDTO, TimetableViewModel>()).CreateMapper();
            var timetables = mapper.Map <IEnumerable <TimetableDTO>, List <TimetableViewModel> >(timetableDtos);

            return(View(timetables));
        }