Lockscreen: Add timeout and instant lock option to slide lock (1/2)

  This adds AOSP's new timeout and instant lock options to the
  slide (aka chooser) style lockscreen.

Change-Id: Ide8e8d14603e5111debcc7a7cf6c4b74898bfa3d

Conflicts:

	res/xml/security_settings_chooser.xml

Source
https://gerrit.omnirom.org/#/c/2378/