Keyboard layouts

Please support both QWERTY and AZERTY keyboard layouts, especially in the case of WebGL game ; it's really simple with four direction motions (or less) ...

Keys relative to motion : * Q to move left * A to move left * D to move right * W to move up * Z to move up * S to move down * SPACE to jump

Eventually, support also arrow keys.

Others available nearest keys : * E to special action 1 * C to special action 2 * X to special action 3

Most others keys around "this block of nine keys" can be used with both of keyboard layouts.

Thanks for the whole player community.