public ActionResult Edit(Specialty specialty)
        {
            if (ModelState.IsValid)
            {
                db.Entry(specialty).State = EntityState.Modified;
                db.SaveChanges();
                return RedirectToAction("Index");
            }

            return View(specialty);
        }
        public ActionResult Create(Specialty specialty)
        {
            if(ModelState.IsValid)
            {
                db.Specialties.Add(specialty);
                db.SaveChanges();
                return RedirectToAction("Index");
            }

            return View(specialty);
        }