Navbar: Fix MDPI & HDPI landscape layout

Before: http://i.imgur.com/89SmFbX.png
After: http://i.imgur.com/UbuAggD.png

Change-Id: I6623cb97881313886de39a67baa98f7bd4b0696a
Fix hdpi/mdpi statusbar layout

Fix hdpi/mdpi statusbar cut-offs
Previously, the QS/NOTIFICATION toggle was cut-off when halo and clear-all button were aviable at the same time

SystemUI: Increase hdpi/mdpi statusbar header margins
SystemUI: new drawables to fix signal bar color when data is off
Credits to @szlkiev & @garwedgess / PAC-man
Update Readme

Change-Id: Ib377587184782b01686a0441e2fa6625b66eda11
Revert "Update Readme"

This reverts commit a8550553e3733ec24aa2f4df0662229adf62eaa1.

Change-Id: I534cf55834fe0fc26e2bf9b38707bf1a6f7a89f4
Merge remote-tracking branch 'pa/jb43-legacy'