Accessibility info for Ambitus, Chord Line and Tremolo.
	modified:   libmscore/ambitus.cpp
	modified:   libmscore/ambitus.h
	modified:   libmscore/chordline.cpp
	modified:   libmscore/chordline.h
	modified:   libmscore/tremolo.cpp
	modified:   libmscore/tremolo.h
	modified:   mscore/menus.cpp