Improved introduction and lifts

The monkey jumping on the top girder in the opening animation looks a little better, it interacts better with the background, but it's not perfect yet.

New colour animation in the high score table.

The colour animation in the list of the authors of the original arcade game takes less time. Anyway, it still applies that any part of the introduction can be skipped by pressing any key, and after a certain period of inactivity in the control screen, the introduction is repeated.

Mario rides more steadily on lifts. Previously, he was often shifted one pixel up or down there. This can still happen occasionally, but more rarely. The change is only reflected in the game graphically, it behaves the same.