Settings: Move Navigation buttons out of interface.
    http://imgur.com/iQi5xMg
    PS15: Move expanded desktop options to display.
    PS16: More cleanup.
    PS17: Remove whitespace.

@cristianomatos: thogether with this commit i've changed some crDroid custom features to match with new re-worked settings by CyanogenMod. Also include in ButtonSettings.java all CM navbar enable/disable codes (commented). I will try to use CM way of navbar activation latter

Change-Id: I656c8283e0f32c373afeb5cf4f9df943115d539f

Conflicts:
	AndroidManifest.xml
	res/xml/notification_drawer.xml
	res/xml/settings_headers.xml
	res/xml/system_ui_settings.xml
	src/com/android/settings/Settings.java
	src/com/android/settings/cyanogenmod/SystemUiSettings.java