Button that goes from app info details to app info

This info button is shown on the header of all app detail pages.
This button is hidden when coming from app info, to avoid allowing
users to go in circles.

Since app notification details had a settings button where the new
info button goes, the app notification settings will move down to
be a preference (this matches the usage access screen UX).

Also fix a bug in launching app notification settings for managed
profiles.

Bug: 20633669
Change-Id: Idbb4f7c3326b4c6b0a19559b722ee0406eaba6c0