Resurrect global actions, remove confirmation for Power off.

Instead of fast forwarding to the power off confirmation dialog,
display the global actions dialog with a single item by default,
with no confirmation.

Re-configure the bugreport option, it will appear if specified
in developer settings.

Bug:15109463
Change-Id: I5a19df8684d661345e42ad305f64f01c271aae19
2 files changed