Fix focus behavior in setup screens.

- properly put actionNext on most fields
- make sure actionDone doesn't do funky things with focus so that a
non-editable field gets focus. we may want to consider not making this
focusable in the future.

Bug: 5367827
Change-Id: I4e7bb13801d96a4f1e6fd02a2d43713200738b18
5 files changed