public ActionResult UpdateRelease(AppRelease release)
        {
            AppRelease rp = CurrentUserModel.GetAppRelease(release.Id);

            rp.AppVersion             = release.AppVersion;
            rp.AddinRootVersion       = release.AddinRootVersion;
            rp.CompatibleAppReleaseId = release.CompatibleAppReleaseId;
            if (release.ZipUrl != null)
            {
                CurrentUserModel.UpdateAppReleaseFileFromUrl(rp, release.ZipUrl);
            }
            else
            {
                CurrentUserModel.UpdateAppRelease(rp, Request.Files.Count > 0 ? Request.Files[0] : null);
            }
            return(RedirectToAction("Index", "Admin"));
        }