ControllerClient can retrieve valid protocol code from each key press

- ControlKey now includes protocolCode property
- RaceController now fires action with each key press
- Shift toggles sail state appropriately

#story[1089]

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

@@ -101,6 +101,7 @@ public class RaceController extends Controller {
             if(controlKey != null) {
                 try {
                     controllerClient.sendKey(controlKey);
+                    controlKey.onAction();  // Change key state if applicable
                 } catch (IOException e) {
                     e.printStackTrace();
                 }