public ActionResult RemoveDisplayQuarter(QuarterItemModel entity)
        {
            ScheduleManager manager = new ScheduleManager();

            if (manager.RemoveDisplayQuarter(entity.DisplayQuarterID))
            {
                return RedirectToAction("ManageQuarters");
            }
            else
            {
                var model = manager.GetQuarterItemFromId(entity.DisplayQuarterID);
                return View(model);
            }
        }
        public ActionResult RemoveDisplayQuarter(int id)
        {
            ScheduleManager manager = new ScheduleManager();

            var model = manager.GetQuarterItemFromId(id);

            return View(model);
        }