Added boat wakes back to the visualiser

#story[923]

src/main/java/seng302/controllers/RaceViewController.java

@@ -105,7 +105,7 @@ public class RaceViewController extends Thread implements ImportantAnnotationDel
             // Load FXML and set CSS
             fxmlLoader
                 .setLocation(getClass().getResource("/views/importantAnnotationSelectView.fxml"));
-            Scene scene = new Scene(fxmlLoader.load(), 469, 248);
+            Scene scene = new Scene(fxmlLoader.load(), 469, 298);
             scene.getStylesheets().add(getClass().getResource("/css/master.css").toString());
             stage.initStyle(StageStyle.UNDECORATED);
 

src/main/java/seng302/controllers/StartScreenController.java

@@ -132,6 +132,7 @@ public class StartScreenController implements Initializable {
     }
 
     public void switchToRaceView() {
+        StreamParser.boatPositions.clear();
         switchedToRaceView = true;
         setContentPane("/views/RaceView.fxml");
     }