Clean up grid-input-view
Clean up grid-input-view

* Remove globals
* Listen to `change` events instead of `focus`/`blur`
* Get models by index, instead of by ID

weigang992003/pure-css-chinese,yahoo/pure-site,weigang992003/pure-css-chinese,yahoo/pure-site,jamesalley/pure-site,jamesalley/pure-site