Navigation bar dimensions (1/2)

- Change height when in portrait
- Change width when in landscape
- Option to enable or disable nav bar

This is partially ported from SlimRoms
Thanks to @kufikugel

Change-Id: Ic2bfb32684c3d74062d123266db1516e09d92fb6
RAM bar (1/2)
- This commit includes small re-sizes to fit transparency in new launcher and also moves clear recents button to bottom|left

Thanks to @kufikugel for hole code ported from 4.3

Change-Id: If1341c1ad5614a1adca07358910a4df85c919966

Conflicts:
	core/java/android/provider/Settings.java
	packages/SystemUI/res/layout-land/status_bar_recent_panel.xml
	packages/SystemUI/res/layout/status_bar_recent_panel.xml

Conflicts:
	packages/SystemUI/res/layout-land/status_bar_recent_panel.xml
	packages/SystemUI/res/layout/status_bar_recent_panel.xml
add Navbar, Rambar

Change-Id: I054405870f71e00158304d9caa5ff79407cbd229