Forward port button/keyboard backlight options

Change-Id: Ica02fad15392201b719144c4b911407d5b370cee
Development settings: Checkboxes to switches

Change-Id: I6f323e43d3c6c90052d6c364d5859812e15ca0d4
Settings: Move quickboot preference under advanced reboot

Change-Id: I8739768cdef9a8d2b07769bba15356de567ac114
Forward port 'Swap volume buttons' (3/3)

Change-Id: I44a2b37b95848fff24c53c4c3561a3c000c487a1
Settings : date and Time - Checkbox --> Switches

Changes Date & Time Settings from checkboxes to on/off switches, as
recommended: http://developer.android.com/design/building-blocks/switches.html
This also adds some more design consistency.

Change-Id: I1e7848ae46859161f45a3a952e5a8d06ad52a023