[GUI] Add tree expand and tree collapse icon in attribute table
Check if promodsim2022/5c9a90c1 can be implemented without affecting the performance of the GUI. If this is useful, adopt this proposal.
29. April 2024: Due to updates GitLab may be unavailable for some minutes between 10:00 and 12:00.
Check if promodsim2022/5c9a90c1 can be implemented without affecting the performance of the GUI. If this is useful, adopt this proposal.