GET /groups/ lacks group title

[ksuess]

POST /groups

{
    "@type": "Group",
    "id": "todo_viewer",
    "title": "TODO Viewer"
}

GET /groups
response:

        {
            "@id": "http://localhost:8072/db/todo/groups/todo_viewer",
            "@name": "todo_viewer",
            "@type": "Group",
            "@uid": "c5a|ca1|eabac2c393a44ce089c5b5485813040f",
            "groupname": null,
            "id": "todo_viewer",
            "title": null,
            "roles": [],
            "users": {
                "items": [],
                "items_total": 0
            }
        }

The gmi display of title in groups folder is correct.