Settings: Hide Development settings when it is turned off

This commit hides the Development and Performance settings items
when the user turns off Development settings. This sets things back
to tapping x number of times on the build number to once again enable
developer settings

Change-Id: I6003f73f5abee54bb000f01757ecffe7b68dba59

Settings: Make Perf settings act just like dev setting - start hidden

The Performance settings should not show until the owner of the
device enables development options, guest users should not be able
to turn it on.

Change-Id: Ib08d29bfd92ad44c71d02c115e12064ddf4704e0
Move Superuser header below Developer Options

Change-Id: Ica85aae0d3f06e6c5e837946cfc893d9e2f4fb7d
Settings: Move 'Advanced reboot' to other position

This commit moves the 'Advanced reboot' checkbox one item down
because it looks a bit strange as first element in the list IMHO.

Before: http://goo.gl/jhw8h
After:  http://goo.gl/X3H68

Change-Id: I26d4a5caba3e720b952ec405e200c1528f7a7321