Make layout optional
Created by: mnieke
Sometimes, a custom layout (file) is created without moving a feature or similar. Also sometimes, the feature model is not layouted automatically (because of above?). However, I would suggest, to make the layout "more" optional. For instance, it would be necessary to explicitly select "Manual Layout". This could be done be right-clicking on the painting area and checking such an entry. Only then, a manual layout is created.