Fixed pid bug, attitude was not controlled
Added possibility to log pid control values

Conflicts:
	apps/multirotor_pos_control/multirotor_pos_control.c
	src/drivers/ardrone_interface/ardrone_interface.c
Added ctrl debugging values

Conflicts:
	src/modules/sdlog2/sdlog2.c
Just include the rate controls for now
Count and write for control debug loging was missing (still not working)
Logging of ctrl debug values working now
Merge branch 'pid_fixes' into new_state_machine

Conflicts:
	src/modules/multirotor_att_control/multirotor_rate_control.c
	src/modules/sdlog2/sdlog2.c
	src/modules/sdlog2/sdlog2_messages.h

and some fixes, logging of control PID values now working