Fix remaining errors in stemmablenote.js
Fix remaining errors in stemmablenote.js

Tails/vexflow,aaronmars/vexflow,aaronmars/vexflow,Silverwolf90/vexflow,Huji/vexflow,Silverwolf90/vexflow,Silverwolf90/vexflow,Huji/vexflow,aaronmars/vexflow,Huji/vexflow,Tails/vexflow,Tails/vexflow