Squashed 'extensions/DFDiagram/' changes from f659e95..5818b6e

5818b6e Remove space

git-subtree-dir: extensions/DFDiagram
git-subtree-split: 5818b6ea7769abdef2a242a6649e9efaabcc5a8f
Update DFDiagram

Merge commit '0dcc487b7ef71c106d1c1a028f020d7f8a19da26'