shows results list in portrait on tablet.
shows split in landscape on portrait.
Since email currently has no concept of saving the currently
selected message on orientation changes, there are some issues changing orientation
and restoring to the correct search state.
fixes coming in the next cl.
Change-Id: Ib0b98c4018c2ae0fabc2c78dfce4d3a197837d4f
Mindy Pereira