//List All Sprint
 public ActionResult AllSprints()
 {
     Sprints sprint = new Sprints();
     var sprints = sprint.GetAllSprints();
     if (sprints.Count() > 0)
     {
         return View(sprints.ToList());
     }
     else
     {
         ViewBag.Message = "There are not registered sprints.";
         return View();
     }
 }