Include the clock in landscape on Xoom

1. R.id.status was defined twice and was used inconsistently in code:
   (visibility set to enabled, but only on portrait...) This code removes
   the bad view.

2. The TextView date was never used, either by another layout or by
   code. Deleting this view too.

3. Including a standard status layout on smallest-width-600px, which includes
   a clock and a status message on Xoom.

Fix b/6061076

Change-Id: Ibb492e89f6a4a38ac6a22398ec9c14bbe3fb7e3d