Phone blacklist: block private numbers functionality

Change-Id: I3a8ef9b12e67892a0cb24e2af4b0f26c68965e07
Fix rebase derp.

Change-Id: Ie009eda79be04a4eb76272bbfdf4766e642d0918
Merge remote-tracking branch 'cm/cm-10.1' into cm-10.1