backport SVN commit 877617 by tokoe:
backport SVN commit 877617 by tokoe:

Make vCard thumbnail preview work again


svn path=/branches/KDE/4.1/kdepim/; revision=877639

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