Re-enabling Navigation bar transparency (2/2)
- It's been hidden due the hole new SlimRoms nav bar customization implementation

Change-Id: Ifbc90c2ced6796d43cd3bd9d50bf1c309510c1dc

Conflicts:
	res/values/cm_strings.xml
	res/xml/navbar_style_dimen_settings.xml
	src/com/android/settings/cyanogenmod/NavbarStyleDimenSettings.java
	src/com/android/settings/cyanogenmod/StatusBarStyle.java