re-implemented existing functionality in UI

- Correct player count is shown in server list
- Servers now advertise their capacity and number of players connected
- Players can click join on the servers in the server list
- Direct connect works
- Can set max players / server name in host dialog
- Server starts correctly when host clicked
- Implemented boat customization
- Implemented 'begin race button', and disabled it for players that aren't hosts
- Added countdown timer in lobby
- Fixed bug where app wouldn't close

Tags: #story[1245]

src/main/java/seng302/gameServer/ServerToClientThread.java

@@ -132,7 +132,7 @@ public class ServerToClientThread implements Runnable, Observer {
             return;
         }
 
-        if (GameState.getPlayers().size() >= GameState.MAX_PLAYERS){
+        if (GameState.getPlayers().size() >= GameState.getCapacity()){
             RegistrationResponseMessage responseMessage = new RegistrationResponseMessage(0, RegistrationResponseStatus.FAILURE_FULL);
             os.write(responseMessage.getBuffer());
             return;