Merge branch 'master' into story_61

Also got client-server handshake working. Multiple clients can connect and control their own boat.
The client's boat has a larger black triangle drawn around it. Probably needs tidying up.
Added isClientBoat boolean to VisualiserBoat.

WindGenerator is now an interface, implemented by ConstantWindGenerator (useful for testing) and RandomWindGenerator. Added ConstantWindGeneratorTest.
RandomWindGenerator was formerly WindGenerator.
The WindGenerator is passed in to MockRace.

CommandFactory throws a CommandConstructionException if it cannot create a command.

MessageSerialiser and MessageDeserialiser correctly terminate on error.

Readded VisualiserInput's switch statement in the main loop, pending a refactor.

Removed the sleep statement from LobbyController - it was blocking javaFX thread.

Lobby.fxml: moved buttons and text input into grid panes, so they don't break when you resize screen.

Added some test object creation functions in several test classes (MockRaceTest.createMockRace(), BoatXMLReaderTest.createBoatDataSource(), etc...).

#story[1095]

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

@@ -19,6 +19,7 @@ import java.net.URL;
 import java.net.UnknownHostException;
 import java.util.ResourceBundle;
 
+//TODO it appears this view/controller was replaced by Lobby.fxml. Remove?
 /**
  * Controls the connection that the VIsualiser can connect to.
  */
@@ -82,11 +83,6 @@ public class ConnectionController extends Controller {
     private ObservableList<RaceConnection> connections;
 
 
-    /**
-     * Represents whether the client is currently hosting a game already - this is to ensure they don't launch multiple servers.
-     */
-    private boolean currentlyHostingGame = false;
-
 
     @Override
     public void initialize(URL location, ResourceBundle resources) {