List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=-auto_start_on_max&page=13
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
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            "description": "Wird Zeit, dass es hier mal ein Turnier gibt :) - also habe ich mal ein Rundenturnier kreiert....",
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