Changed the behaviour of DisplayManager to match previous commit and fixed tests and bootstrap accordingly

dungeonbattle/tests/game_test.py

@@ -18,7 +18,7 @@ class TestGame(unittest.TestCase):
         self.game = Game()
         self.game.new_game()
         display = DisplayManager(None, self.game)
-        self.game.display_refresh = display.refresh
+        self.game.display_actions = display.handle_display_action
 
     def test_load_game(self) -> None:
         self.assertRaises(NotImplementedError, Game.load_game, "game.save")