Spun off Locatable interface to make collision code more reusable

#story[1100]

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

@@ -23,7 +23,6 @@ import visualiser.gameController.ControllerClient;
 import visualiser.gameController.Keys.ControlKey;
 import visualiser.gameController.Keys.KeyFactory;
 import visualiser.model.*;
-import visualiser.network.ServerConnection;
 
 import java.net.URL;
 import java.util.ResourceBundle;
@@ -293,7 +292,7 @@ public class RaceController extends Controller {
 
         //Current place within race.
         boatPlacingColumn.setCellValueFactory(
-                cellData -> cellData.getValue().positionProperty()  );
+                cellData -> cellData.getValue().placingProperty()  );
 
     }