fix a ui issue with bootstrap modals and scrollbars
cleanup; use fat-arrow function binding
[stark] move some state setup into the constructor
[stark] refactor App#render_views -> State#render

* rendering belongs in the State
* allows us to more easily implement State#redraw
* finally added some basic error handling (just catch and release for
  now)
[stark] catch template rendering errors
wrap in form-group
fix check/command table view (similar to repos)