Fix Bug 767: Fire changed events when changing stacking order of elements (modified patch from Da.Waterworth)
Fix Bug 767: Fire changed events when changing stacking order of elements (modified patch from Da.Waterworth)

git-svn-id: 829f041edcabe93b7893c4ec42f5993156d1fcf0@1952 eee81c28-f429-11dd-99c0-75d572ba1ddd

kenwenzel/svg-edit,kenwenzel/svg-edit,kenwenzel/svg-edit