Fixed last parts of issue 561 by correctly ungrouping blurred groups. Also fixed some other blur related bugs
Fixed last parts of issue 561 by correctly ungrouping blurred groups. Also fixed some other blur related bugs

git-svn-id: 829f041edcabe93b7893c4ec42f5993156d1fcf0@1580 eee81c28-f429-11dd-99c0-75d572ba1ddd

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