Don't display "Comment" field in details if it is empty

ui/src/album/AlbumListView.js

@@ -40,7 +40,9 @@ const AlbumDetails = (props) => {
         <BooleanField source="compilation" />
         <DateField source="updatedAt" showTime />
         <SizeField source="size" />
+        {props.record && props.record['comment'] && (
           <MultiLineTextField source="comment" />
+        )}
       </SimpleShowLayout>
     </Show>
   )

ui/src/common/SongDetails.js

@@ -29,6 +29,9 @@ export const SongDetails = (props) => {
   if (!record.discSubtitle) {
     delete data.discSubtitle
   }
+  if (!record.comment) {
+    delete data.comment
+  }
   if (record.playCount > 0) {
     data.playDate = <DateField record={record} source="playDate" showTime />
   }