Settings: Add Advanced reboot (1 of 2)

This commit adds a setting in Development settings for including options
in the power menu for rebooting into recovery or bootloader, defauled to
off.

When enabled, the Advanced reboot options will only be available once the
device is unlocked.

Change-Id: Ib77f0be178d15131b99adbe0abb6ba18b2b7c0b6

From: jackmu95 <jacob.mueller.elz@gmail.com>
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

From: ThiagoVinicius <thiagovfar@gmail.com>
Development Settings: fix setting reset on disable

When Development Settings are disabled, some settings are
reset to values other than the default. This fixes it.

 - No need to have resetAdvancedReboot(), as it is already
   reset by the "unckeck all checkboxes" logic.

Change-Id: If5d88d220d2a17d6e172b2f54facd4afa3bae904

Conflicts:
	res/values/cm_strings.xml