WIP: CM Lockscreen Targets

Includes Change I683d9c22: Add the new lockscreen drawables to the
picker list by Bjorn Lunden (blunden)

Settings : Lockscreen targets alignment fix

Add separate layouts for different layouts to fix alignment issues.

Change-Id: I2453225e8a683244a1e11f0a8d3c18954ba5885f

Change-Id: I155824abc0578d98d3e2f1f5c2dcde3fa7b2ef84

Conflicts:
	AndroidManifest.xml
	res/values/arrays.xml
	res/values/dimens.xml
	res/values/strings.xml
	res/xml/settings_headers.xml
Settings: Lockscreen Targets Icon Revamp

Adjust the size of custom app icons and resize and round the corners
of gallery icons for a more uniform look.

Before http://imgur.com/cTOqdwX

After http://imgur.com/EKAeFiw

Change-Id: I75f3656ae5b4ac4a4bd1c1cbed6c07ab2863f4fd
PA: Settings: Lockscreen Targets Icon Revamp