Added chat functionality & timer back into the game + bug fixes

- Added chat back into the game
- Fixed a bug where the timer would show "race finished" when the race hadn't started
- Fixed a bug where resources weren't being deallocated when the game was closed

Tags: #story[1246]

src/main/java/seng302/visualiser/fxObjects/assets_2D/BoatObject.java

@@ -246,7 +246,6 @@ public class BoatObject extends Group {
         wake.getTransforms().setAll(new Rotate(heading, new Point3D(0,0,1)));
         if (sailsIn) {
             boatAssets.showSail();
-            System.out.println("heading = " + heading);
             Double sailWindOffset = 30.0;
             Double upwindAngleLimit = 15.0;
             Double downwindAngleLimit = 10.0; //Upwind from normalised horizontal