Improve readability of the domain model by showing documentation in the access rule overview tab

At this moment, you are only able to read a small part of the xpath constraint when looking in the access rule overview.

To make it easier to find the access rule that is used for a specific situation, it would be better if the Xpath constraint column was replaced with a documentation column, or to be able to add a comment at the start of your constraint, which can then be shown in the overview.

This makes it easier for developers to find the correct access rule, without having to open each of them and read the entire constraint.

Examples: