Oops, accidentaly allowed the player to move through walls.
Game: don't need 64bit integers to count remaining targets.

Map with 5G targets would be too boring anyway.
Font initialization in main application, not in menu.

The font will be used in more places.
Game: counting also player moves.

Not used anywhere (yet).
Game: emitting state change signals from Level.
No need to debug draw anything anymore.
Game: initial HUD, displaying remaining targets & move count.