Contacts: Add support for Blacklist

Requires http://review.cyanogenmod.org/#/c/34904/

Change-Id: Ibc07f5749b7adcc08f106012ba22ae866d004921

Conflicts:
	res/values/strings.xml
Allow blacklisting numbers from the call stats details menu.

Change-Id: I840c382afb561805fd74cbd696a80d3bca4be041
JIRA:CYAN-910
Make contacts app aware of phone blacklist setting (3/3)

Change-Id: I46935ca140098ca3f1c1d714ac4a406dd9d7f52e