State that is modified on any tab pushes into the url
Chord and instrument parameters are read from URL
Chord Details view now reads fingering parameter from url and displays
chord appropriately
Merge pull request #71 from ConchordanceProject/stateful-url

Stateful url
Fixed layout of chord fingerings - position was being offset for banjo
because of the absolute frets at the fifth string. Checking based on
relative frets instead
Removed eventing from note staff in favor of direct binding
merged in gh-pages