Added addIndex for trajectory grid

js/client/views/panels/trajectory-view.js

@@ -265,7 +265,7 @@ class TrajectoryPanelView {
 
         // Create a new row.
         let newRow = { id: traj.id, name: traj.name, type: traj.type, visible: visible };
-        this._trajectoryGrid.api.updateRowData({ add: [newRow] });
+        this._trajectoryGrid.api.updateRowData({ add: [newRow], addIndex: 0 });
 
         // Select the created line if selected is true.
         if (selected) {