Added a base class SettingsPreferenceFragment from which the settings activities should
be derived so that they can behave like fragments. It contains some commonly called
utility methods and dialog conversion to DialogFragment.
Some of the top-level activities can be launched directly without the left pane.
Settings.java acts as a proxy activity that contains just that settings fragment without
the left pane.
There are still a lot of second and third level activities that need to be fragmentized.
This is just the first pass to test the 2-pane layout.
The Settings application now provides a hook that can be used by an
operator or a vendor specific application to add an activity of choice
in the settings menu.
Change-Id: Id55da9fd4262bbfc6a5abf863799c747b0d75b24
Add a new top-level setting for car/desktop dock settings.
Sub menu contains one item - Audio (settings)
Sub text for Audio shows current docked status and launches either the
audio settings or a dialog saying that you're not docked and you need to
buy a new dock from Google (kidding).
The Settings app now shows a "Search settings" item,
if there is an activity that handles the Search settings intent.
This conditionally included settings is handled in the same way
as the sync settings.
