18. Removed from TopResults class the Singleton pattern and made according documentation changes;
19. Made TopResults class to be instantiated only form the LabyrinthFactory class - added method and documentation;
20. Made TopResults and result serializable;
21. Removed FileManager class and replaced it with FileSerializationManager class which serializes the top result table into file using binary serialization;
22. Made FileSerializationManager class to be instantiated only form the LabyrinthFactory class - added method and documentation;
23. Small changes in GameEngine to support the changes in the other classes.