Improve the game over screen

[antimundo]

The game over screen is really boring, and doesn't present the data in a good way.
This should be improved, this doesn't need for an amazing revolutionary design, let's keep it simple and clear.

Also since the game now saves all the progress of the player, this could show how the player is progressing over time.

[antimundo]

Design mockup:

[antimundo]

Closed in 4809fa4