message: Use concatUrls
diff: @@ -94,7 +94,7 @@ export class GalleryNavigatorComponent implements OnChanges {
  }
  getDownloadZipLink(): string {
  - return Config.Client.urlBase + '/api/gallery/zip/' + this.getDirectoryPath();
  + return Utils.concatUrls(Config.Client.urlBase, '/api/gallery/zip/', this.getDirectoryPath());
  }
  getDirectoryPath(): string {
  