Mentat

1.) Context menu for items shown in the changelogs.search endpoint (e.g. "Other changes with the same author") does not work - the URL created does not fill in the user and/or the model as expected.

2.) Searching using "Model ID" works only when a item model is specified - there is no reason why it should not work even without it, even if the query is unlikely.

3.) There is no way to filter only "<< system change >>" changes, which can be a valid use case.

4.) Operations (add/remove)management and (add/remove)manager and do not have any icon set. This icon is displayed in changelogs. We could set the same icon as for (add/remove)membership and (add/remove)member operations.