Clean-up /start/'s public JavaScript for Model/Lists and Router
Improve GridModel's `toString()` method
Take Tilo's advice and simplify GridModel#toString again ;)
Merge branch 'get-started-client' of github.com:ericf/pure-site into ericf-get-started-client

Conflicts:
	public/js/models/grid-model.js
Clean up grid-input-view

* Remove globals
* Listen to `change` events instead of `focus`/`blur`
* Get models by index, instead of by ID
add data- attributes to rows.handlebars
clean up grid-tab-view
clean up grid-output-view
make data-attributes consistent