Settings: remove screen-off animation checkbox

Instead of having a separate checkbox on whether to
enable an animation, let's collapse it into the listview
preference. Now the user is presented with 3 options:

* Disabled
* Electron beam
* Fade out

Change-Id: I8bdcfbf5eba6b639eecabe22ad9b78b642f636df
Signed-off-by: Roman Birg <roman@cyngn.com>

Conflicts:

	res/values-af/cm_strings.xml
	res/values-ca/cm_strings.xml
	res/values-cs/cm_strings.xml
	res/values-da/cm_strings.xml
	res/values-de/cm_strings.xml
	res/values-es-rXA/cm_strings.xml
	res/values-es/cm_strings.xml
	res/values-fi/cm_strings.xml
	res/values-fr/cm_strings.xml
	res/values-hu/cm_strings.xml
	res/values-it/cm_strings.xml
	res/values-ja/cm_strings.xml
	res/values-nl/cm_strings.xml
	res/values-pl/cm_strings.xml
	res/values-pt-rBR/cm_strings.xml
	res/values-pt-rPT/cm_strings.xml
	res/values-ru/cm_strings.xml
	res/values-sk/cm_strings.xml
	res/values/cm_arrays.xml
	res/values/cm_strings.xml
	res/xml/display_settings.xml
	src/com/android/settings/DisplaySettings.java