[4/6] Settings: Blacklist support

Base: https://gerrit.omnirom.org/#/c/5668/
InCallUI: https://gerrit.omnirom.org/#/c/5669/
Mms: https://gerrit.omnirom.org/#/c/5671/
TelephonyProvider: https://gerrit.omnirom.org/#/c/5012/
Telephony: https://gerrit.omnirom.org/#/c/5010/

Change-Id: I6739bbd72f64095a324f6c6188e2eac53a2783b9

Conflicts:
	res/xml/security_settings_pin.xml