Implement basic functionality to left-module
Add counter id to chord li based on value of i in loop
Remove comment
Set up left module positioning, padding and styling
Return selected chord to first by default
Add functionality to shift chords up or down based on selection
Adjust left module position
add and style 'chords'
Add and style arrows to select arrows. No functionality yet
Adjust arrow position
Add functionality to arrow imgs to change selected chord. If possible, need to DRY up js code
Add functionality to highlight selected chord
Hide left module by default
Update left/right arrows to up/down
Adjust chord font size and positioning