SRC: Next piece text and board now in bottom
SRC: Initial score and level boards.
SRC: Block deletion every time a piece is stuck
SRC: Few changes. Detail bellow.

* Data stored in Actions.
* Score each time a block is deleted.
SRC: Bug of style.
SRC: Score and level systems.
SRC: State::init can receive an Action.
Few changes. Details bellow.

SRC: Improvement on menu texts and accessibility.
     Game over menu implementation.

IGNORE: Annoying Windows Thumbs.db files.