use nickname if available, and realName instead of formattedName
use nickname if available, and realName instead of formattedName

svn path=/trunk/kdepim/; revision=182701

lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi