UI improvements (#726)

* Use rating stars in movie
* Make multiset button more obvious
* Hide select all/none buttons where not selectable
* Make add the default multi-set mode

ui/v2.5/src/components/Scenes/SceneList.tsx

@@ -56,6 +56,7 @@ export const SceneList: React.FC<ISceneList> = ({
 
   const listData = useScenesList({
     zoomable: true,
+    selectable: true,
     otherOperations,
     renderContent,
     renderEditDialog: renderEditScenesDialog,