removing a view as a result of a collection reset doesn't clean up child views

[carpeliam]

When using a CollectionView, resetting the collection removes child views from view but does not call their "destroyed" callback.

Here's an example: http://jsfiddle.net/8HN6q/. Clicking on any of the "remove me" button will remove models from the collection individually and call that view's destroyed callback; clicking on the "clear" button will reset the collection and remove the views, but without calling the "destroyed" callback.

[eastridge]

@carpeliam thanks for the fiddle, we'll look into this.