React code splitting (#2603)

* Code split using react lazy
* Split locales
* Move to lodash-es
* Import individual icons

ui/v2.5/src/components/Galleries/GalleryViewer.tsx

@@ -38,3 +38,5 @@ export const GalleryViewer: React.FC<IProps> = ({ galleryId }) => {
     </div>
   );
 };
+
+export default GalleryViewer;