`MOVE_ALL` reducer is broken for disabled items

[atomicpages]

There are two main issues here:

• Reducers shouldn't be accessing the DOM
• Performance impact for large lists

Possible Solutions

• Cache index of disabled items. Currently status is set on the item itself, but maybe it's required in the Shuttle state (like how pre-selected items are handled).
  • Disabled items cannot be based on index, but rather the content
  • For object types, the component can only check ===, maybe this is exposed as a hook too?