Settings: Bring back app ops

Google didn't expose app ops yet, but we want to.  Places the app ops fragment
under the System header in settings

Thanks @BigBrother1984 for the drawables

ps2: fix indents
ps3: really fix indents
ps4: fix parentActivity key name

Change-Id: I09ec8c0b6d3b681f6b008d140a93f8112814228a
Signed-off-by: Evan Anderson <evan1124@gmail.com>
Notification LED Control (2/2).

* Make led color customizable.
* Global and per-app settings.
* Default led color is white.
* The option category replace old stock on/off checkbox.
* Remove useless code from display settings, the feature has its own java files.
* The java files in settings are stored into its own com/android/settings/notificationligh folder.
* Credits into code comments of each specific java file.

PS2:

* Use already defined string.
* Fix conflict after a previous commit merge on gerrit that wasn't linked.

PS3:

* Add other strings.
* Fix icon call.

PS4:

* More aosp style led category string.

PS5/6:

* Update Description.
* Add missing header in pa_arrays.

PS7:

* Fix variables check in notification light.
* Expose battery led indicator control in LED settings.
* Update strings and add battery category one.

PS8:

* Ditch battery led option, remove related code and classes.
* Add a boolean to check if device has led.
* Update commit description.

PS9/10:

* Fix getResources().
* Update description.

PS11:

* Fix strings confilcts after app ops merge.
* Remove battery strings.

Signed-off-by: Carlo Savignano <stevewatersy@gmail.com>

Change-Id: I7ca73f9cf4631d44fa3020b079a8c9e84b666f41
Spanish translation for notification led

Change-Id: I6d3f4acf4a590f741ef6a1617ccd36bf84f8d329
Settings: Notificaion LED: Fix capitalization

LED should be all caps because it is an abreviation

Change-Id: If52d3e53084a7cac225aee4d40bcfac8ec9b57c8
Signed-off-by: Evan Anderson <evan1124@gmail.com>