don't crash if there is no N-value in the vcard

Signed-off-by: Lehner Florian <dev@der-flo.net>
if it's a company then change default icon

Signed-off-by: Lehner Florian <dev@der-flo.net>
don't lock out yourself

Signed-off-by: Lehner Florian <dev@der-flo.net>
don't forgett to give it a value

Signed-off-by: Lehner Florian <dev@der-flo.net>
use icon in dialogs

Signed-off-by: Lehner Florian <dev@der-flo.net>