replaced _undo->push() with undo() in Score::transposeKeys()
fix for frame properties in inspector
add trackName tag in instruments.xml, use first longname when not available, store description
fix memory leak in Score::Score(Score*)
Merge pull request #271 from heuchi/20507_crash_in_transposeKeys

Fix #20507 changing concert pitch state of newly created part crashes
always use the root score undo stack