Finish screen now displays correctly on finishing.

GameState update now checks for finishing the race
Can now go back to main menu from finish screen
Labeled all threads for better debugging
Still need to implement race list ordering and finish screen ordering

src/main/java/seng302/gameServer/MainServerThread.java

@@ -1,5 +1,6 @@
 package seng302.gameServer;
 
+import gherkin.lexer.Fi;
 import java.io.IOException;
 import java.net.ServerSocket;
 import java.time.LocalDateTime;
@@ -48,7 +49,7 @@ public class MainServerThread implements Runnable, ClientConnectionDelegate {
         PolarTable.parsePolarFile(getClass().getResourceAsStream("/config/acc_polars.csv"));
         GameState.addMarkPassListener(this::broadcastMessage);
         terminated = false;
-        thread = new Thread(this);
+        thread = new Thread(this, "MainServer");
         thread.start();
     }
 
@@ -82,7 +83,7 @@ public class MainServerThread implements Runnable, ClientConnectionDelegate {
 
             //FINISHED
             else if (GameState.getCurrentStage() == GameStages.FINISHED) {
-
+                terminate();
             }
         }