More tweaks per spec.
More tweaks per spec.

- Synchronize screensaver jumping to the second
- Turn on the display when this app is launched (by docking
  the device)
- Show DeskClock on top of the keyguard
- Use Math.round() to compute Fahrenheit (sync up with Genie
  widget)
- Stop moving the screensaver while the display is off.
  (http://b/2234698)
- Minor code cleanups.

dseuss/deskclock,OrBin/SynClock-Android,dseuss/deskclock