WIP virtual rendering
WIP
WIP integrated zynga scroller
Split list_view and list_view_mixin
Clean up zynga implementation
expose scroller's scrollTo method on virtual list view
Add mousewheel support to virtual list view
Unified scrollTo API for native and virtual list views
Add acceptance tests for virtual list view
short-circuit syncChildViews if view is destroyed
Android sometimes sends touchstart and touchmove with events that have no touches property
prefix custom events as not to conflict with real events
cleanup event subscription
don't set scroll dimensions twice on init
don't animate virtual list while not in dom.
columnCount change now triggers a syncChildViews
ember-list-container now has a dynamic width

This width is columnCount * elementWidth or nothing
start the list container translated
add some scroller specific lifecycle events to the virtualListView
Inform the virtual scroller when the total height changes