This new widget replaces DigitalClock. It listens to all the correct
system events and offer the ability to customize the formatting
patterns in 12-hour and 24-hour modes. It also supports fixed
time zones to create world clocks.
One more step towards becoming ClockOS!
Change-Id: I677e5dfca8cd8c8d1f8c49e54d7507f4d1885bf4