Moved some files to clean dir structure
Added files for second part of the course:
	new file:   SODAR_02/sensor_ultra/sensor_ultra.ino
	new file:   SODAR_02/sensor_ultra_solved/sensor_ultra_solved.ino
	new file:   SODAR_02/sensor_ultra_solved_a/sensor_ultra_solved_a.ino

Fritzing schema:
	new file:   ../../doc/MontajeServo.fzz
Some corrections:
	modified:   SODAR_01/radar_a_solved/radar_a_solved.ino