redo js tick start to get rid of compute-resource strain problem
### met buttons need fixing...
undo gemfile for heroku
use sugar.js lib, get rid of custom js base-class extensions
all jasmine passes
make Metronome.tickStartAmount dependent on R/L stereo
met buttons work
sharpen js 'onEnded' nomenclature
make looping start accurately
sharpen js 'onEnded' nomenclature