Fixed annotation toggles displaying behind course

#story[782]

visualiser/src/main/java/seng302/Controllers/RaceController.java

@@ -6,8 +6,10 @@ import javafx.beans.value.ChangeListener;
 import javafx.beans.value.ObservableValue;
 import javafx.collections.ObservableList;
 import javafx.fxml.FXML;
+import javafx.scene.Node;
 import javafx.scene.control.*;
 import javafx.scene.layout.GridPane;
+import org.w3c.dom.NodeList;
 import org.xml.sax.SAXException;
 import seng302.Mock.StreamedRace;
 import seng302.Model.*;
@@ -129,7 +131,7 @@ public class RaceController extends Controller {
         raceMap.drawRaceMap();
         raceMap.setVisible(true);
 
-        canvasBase.getChildren().add(raceMap);
+        canvasBase.getChildren().add(0, raceMap);
         race.setVisible(true);
 
         //Initialize save annotation array, fps listener, and annotation listeners