[v12] GUI for relations

[DavidBruchmann]

Is your feature request related to a problem? Please describe. the relations label is displayed differently than other properties and has confusing styling in the parent window

Describe the solution you'd like I think it should be shown like the properties option and the label be grayed out if empty. The green button to create new relations should be shown when the option is opened by the toggle.

[PKuhlmay]

You are Right. The GUI still needs some CSS improvements. The Relations area is no accordion because this results into other issues. I could add paddings and some other styling, so it looks like an accordion bur technically it isn’t an accordion which you can toggle.