Use SettingsPreferenceFragment's method for pinned headers where
possible, and add a frame within the fragment for them to live in
otherwise so that this view doesn't end up on the activity.
Bug: 20886475
Change-Id: I985eb1497744ea50bfabed862e5088eb89df5b61
The root screen now only has the uninstall/force stop/disable buttons
and the rest has moved to sub screens listed in a preference list.
The root screen as UI approximate to the new mocks, but the separated
screens (storage, launch by default, etc.) have yet to receive their
visual overhaul.
Bug: 19511439
Change-Id: I4e01fbaefc69e0652edea2429d9e9b028c78e825