Backport: fix default button
Backport: fix default button

svn path=/branches/KDE/4.2/kdepim/; revision=925471

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