Round out the QS API

 - Add startActivityAndCollapse, to make collapsing the shade easy
 - Add isSecure()
 - Add isLocked()
 - Add unlockandRun(Runnable)
 - Add unavailable, active, and inactive states

The states are added to allow consistent UI across OEM devices, by
allowing UI tweaking and tinting to match system tiles with custom
ones.

The combination of isSecure() and isLocked() and unlockAndRun(Runnable)
allows all combinations of launching show when lockend and triggering
an unlock when needed for sensitive tiles.

Change-Id: Iade98ad9f2c22aa174e62090d8ccd44c86f3bb3c