Settings: Forward port Change behavior when back pressed in PerformanceSettings

When back key pressed, finish this activity if user does NOT accept 'Ok'
in warning dialog rather than show it.
Id: Ied763db4f76a3a2a36f134bd93a0f18047c6cf5c

Change-Id: I07d41d43d00e4fb42ad526d27ee9188d830906ea
Developer Options: launch the Development app

Change-Id: I0f798d197888ef7f40688009536040e061c410f4
Settings: Fix aapt locale set

This allow to display Settings in other language other than default

Change-Id: Ie0d94a85b6b3f26cad853298b911c7fece0a1247
Signed-off-by: Jorge Ruesga <jorge@ruesga.com>
Re-add auto brightness configuration UI (2/2).

Change-Id: I6c56a48fa2145c58a5f203ed56051451ef3f977d