Refactored mock.Event to work with MockRace.

Fixed the networking imports.
Race now keeps a reference to its Race, Boat, and Regatta data sources.
VisualiserRace can be provided with new Race/Boat/Regatta data sources during runtime. Currently it updates boundary and legs with a new RaceDataSource, and marker boats with a new BoatDataSource.

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

@@ -14,6 +14,7 @@ import javafx.scene.paint.Color;
 import visualiser.model.RaceClock;
 import visualiser.model.Sparkline;
 import visualiser.model.VisualiserBoat;
+import visualiser.model.VisualiserRace;
 
 import java.net.URL;
 import java.util.ArrayList;
@@ -69,7 +70,7 @@ public class RaceController extends Controller {
      *
      * @param race Race to listen to.
      */
-    public void setInfoTable(StreamedRace race) {
+    public void setInfoTable(VisualiserRace race) {
         boatInfoTable.setItems(race.getStartingBoats());
         boatTeamColumn.setCellValueFactory(cellData -> cellData.getValue().getName());
         boatSpeedColumn.setCellValueFactory(cellData -> cellData.getValue().getVelocityProp());