QuickSettings: UserTile: Open full contact page

QuickContact popup can only be used for phoning/messaging/emailing,
which doesn't make sense when you're opening your own contact.

Opening the full contact directly makes it easier to beam or share
with other (one less click)

Change-Id: I6b6002fd7ecccaf16f1e410c0c863989bf877711
KeyEvent: update comment

Change-Id: I1ea491e7e23670bf0ea83392710010b557803178
Fix Watchdog HeartbeatHandler to run on correct thread

The HeartbeatHandler for the System Server Watchdog has been running
on the wrong thread due to a race condition in initialization.  It's
designed to run on ServerThread, so that it can catch lockups in the
main looper of the System Server.  It has been running on
ActivityManagerThread instead, so it does not detect lockups on the
ServerThread as it should.

ActivityManagerService is calling Watchdog.getInstance() before
ServerThread calls Watchdog.getInstance().init(), so the handler is
being bound to the ActivityManagerThread instead of the ServerThread.

Explicitly bind HeartbeatHandler to ServerThread, so that the Watchdog
catches lockups on this critical thread.

Change-Id: Iccb184ac3adb817feb86ed4ee0e50e443bf74636