public ActionResult Edit(int id)
        {
            var model = new PageEditModel();
            model.Referrer = Request.UrlReferrer;

            var page = repository.Get<Page>(x => x.Id == id);
            model.Page = new EditablePage {Id = id, Title = page.Title, Content = page.Content };

            return View(model);
        }
        public ActionResult Edit(PageEditModel model)
        {
            var page = repository.Get<Page>(x => x.Id == model.Page.Id);

            page.Content = model.Page.Content;

            repository.Save(page);

            repository.Dispose();

            return Redirect(model.Referrer.AbsoluteUri);
        }