Figure class completed.
Bars syntax included.
Corrections in output format.
First step to Bar-playStatement logic.

TODO:
* Fix the behavior of new channels (fill it with silences correctly)
	- Create a new always-disable channel.
	  (silencesPatternChannel)
	- Fill silencesPatternChannel.music with silences each time
	  that music is added to a channel.
	- When a new channel is created, copy the music of
* Fix the logic of barFigures(...) in the not valid cases.
* Do non-static all translation methods.