Level select menu for Android

[AlexKhayrullin]

Two things:

• Remake the level select menu to make it use the new system
• Come up with a touchscreen-activated method to trigger it

For now, the method I'm thinking about is making the played tap on every name as they come up during the startup screen, then, when the title screen is displayed, make the player tap the screen with two fingers.

[AlexKhayrullin]

Done and tested on hardware, but didn't have time to commit & push.