public ActionResult Upload(HttpPostedFileBase image)
        {
            if (image != null && (image.ContentType == "image/jpg" || image.ContentType == "image/png" || image.ContentType == "image/jpeg"))
            {
                var img = new Photo()
                {
                    MimeType = image.ContentType,
                    Data     = new byte[image.ContentLength]
                };
                image.InputStream.Read(img.Data, 0, image.ContentLength);
                photoService.AddAvatarToUser(img, User.Identity.Name);

                if (Request.IsAjaxRequest())
                {
                }
                return(RedirectToAction("Index"));
            }
            return(RedirectToAction("Index"));
        }