Lists all categories.

GET /eventapi/categories/?format=api&offset=10
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "count": 11,
    "next": null,
    "previous": "https://kalender.fondsfinanz.de/eventapi/categories/?format=api&limit=10",
    "results": [
        {
            "title": "Sachwerte",
            "pk": 13
        }
    ]
}