Get and update nodes in the project documentation (#148)
In "Project" > "Documentation" you can write a nice doc, insert diagrams and elements.
But the diagrams are not updated correctly due to change of size (squeezed etc.).
The Elements and their documentation do not show up. Furthermore you can not select their parent node.
It would be great if you update the size of images as well. Also make it possible to select a parent node for getting all child-elements and their documentation from the diagram.
Currently the command is written to the pdf which seems to be a bug.