Show birthday only when it is a valid date. That fixes 75494 as well.
Show birthday only when it is a valid date.
That fixes 75494 as well.

CCMAIL:75494-done@bugs.kde.org

svn path=/trunk/kdepim/; revision=289346

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