Lockscreen: Lockscreen targets (FWB 1/2) [WIP]

Conflicts:
	core/res/res/values/public.xml

Change-Id: I458bed3a61c9998b338a90fcef3374a6be48b751

Conflicts:

	core/res/res/values/dimens.xml
	core/res/res/values/public.xml
Merge https://github.com/DirtyUnicorns/frameworks_base into jb-mr1