model id fixed in API response to point to the right submap

rest-api/src/main/java/lcsb/mapviewer/api/projects/comments/CommentRestImpl.java

@@ -161,7 +161,7 @@ public class CommentRestImpl extends BaseRestImpl {
 			} else if (column.equals("elementid")) {
 				value = getId(comment);
 			} else if (column.equals("modelid")) {
-				value = comment.getModelData().getId();
+				value = comment.getSubmodelData().getId();
 			} else if (column.equals("title")) {
 				value = getTitle(comment);
 			} else if (column.equals("pinned")) {