Work Profile Passphrase Setting

Create a new section in Security Settings which includes all
settings for the Work Challenge.
Only some settings apply to the Work Challenge, so we reuse
the security settings layouts for items and compare them against
a whitelist to remove unwanted items.

Additionally, remove all usages of ChooseLockGeneric.KEY_USER_ID
in favor of Intent.EXTRA_USER_ID.

Change-Id: I3d1ba953a2056f7c61a7b3feeb8b49f1a352dff6