[1/2] Left handed navbar during landscape mode

This patch allows for the navbar to be moved to the left side of the
screen during landscape mode. Left handed people are more used to this
option.

This patch must go with another patch that changes framework/base

Screenshot: http://i.imgur.com/jWqJcEV.png

Change-Id: I04b2be98b9ffce96b4c36c2e3eae398a9e99562f
Settings: Hide left handed nav option in tablet

Change-Id: Icc1253bd82bdbf02f6339a3207afd7a7bf37eeb6
Navbar Settings: hide show in landscape option for tablets