public ActionResult Delete()
 {
     var context = new MobilniPortalNovicLib.Models.MobilniPortalNovicContext12();
     context.Database.ExecuteSqlCommand("truncate table ClickCounters");
     foreach (var x in context.NewsFiles)
     {
         context.NewsFiles.Remove(x);
     }
     foreach (var c in context.Categories.ToList())
     {
         context.Categories.Remove(c);
     }
     context.SaveChanges();
     return RedirectToAction("Index");
 }