also backport 1.881 for vertical scrolling of checkboxes
also backport 1.881 for vertical scrolling of checkboxes

svn path=/branches/KDE_3_3_BRANCH/kdepim/; revision=359863

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