UI Refresh: a new app info header for app/notification.

- moved force stop and uninstall button to bottom of page (as footer)
- Forked appheader layout file, and created AppHeaderController to
  contain all binding logic for header.

Bug: 32442716
Test: RunSettingsRoboTests
Change-Id: Id4eb365ca25e035c043c068867f5cbc3a202b201