Undocumented changes in 1.0 of @backbone_js
1. fetch calls 'sync' event where before it would call 'reset'. https://github.com/documentcloud/backbone/blob/0.9.10/backbone.js#L414 https://github.com/documentcloud/backbone/blob/master/backbone.js#L429
2. success callback, takes one arg and not three. Trouble if you override sync. https://github.com/documentcloud/backbone/blob/0.9.10/backbone.js#L417 https://github.com/documentcloud/backbone/blob/master/backbone.js#L433