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
Marcos Marado		2:48 PM
Patch Set 4: Verified+1 Code-Review+1
Fixed a bug, updated the commit message to something more descriptive of the change.