Display of error messages
Whenever errors occur they are displayed on the right side of the screen, in a formatting that is hard to read, sometimes parts of the text are not visible. I think it would be more user friendly to display them
- in the middle of the screen
- in a reduced form, e.g. ONLY "Identity value "domain.project.topic_type_5163" is missing in [domain.project.topic_type_5237]" and if possible replace the TypeURIs with text. Example: "Identity value Tag is missing in Book". Or: "You cannot delete the topic type because it is used in instances."
- without "Server error 500" -> this looks scary even if it is true. ;)