Improvements to Copy/Move flow.

- Always open drawer for copy/move operations.
- Set title to match operation.
- Update button to say "move" for move operations.
- Other minor fixes.

Also fix "Home" tests broken by ag/867110

Bug: 26506479
Change-Id: I3ccb4ddc72be0a21b91744bcb610c1ca490ac30c
6 files changed