make orientation work also for content of tabs
make orientation work also for content of tabs

git-svn-id: 94173bd64de46a96edb3f322c9878bdd956bcbff@41 40e545cb-b269-0410-8983-4113551e4d47

ilastik/ilastik-0.5,ilastik/ilastik-0.5,ilastik/ilastik-0.5