Phone: Add Blacklist functionality [2/2]

Original code written for CM7 by Cytown, Cyanogen and nhnt11.

Modified for CM10.1 by Danny Baumann and dvtonder.
Drawables by Björn Lundén

PS 2 : Add Licence

Change-Id: Ib6b8ed4b3410d8553ca061086ba7bcf3b059b1d0