Fixed a bug where an error was caused when attempting to flip the race around the prime meridian.

All x values are now flipped horizontally if the difference between the smallest lon, e.g. -179.5 and the largest e.g. 179.5 is greater than 180.

#story[923] #bug

src/main/java/seng302/models/Race.java

@@ -152,7 +152,7 @@ public class Race {
 
     /**
      * Set a boat as finished
-     * @param boat The boat that has finished the race/home/cosc/student/wmu16
+     * @param boat The boat that has finished the race
      */
     public void setBoatFinished(Yacht boat){
         this.finishingOrder.add(boat);