remove single finger controls from general tab
update transpose control icon/markup and add sprite for metronome
remove comment
updated the metronome controls using the new icon/sprite provided by jmartini
swapped the notation and key&signature tabs for better usability
reduce height of onscreen keyboard by 80% to better fit smaller screen sizes
Merge branch 'develop' of github.com:Harvard-ATG/HarmonyLab into develop