List all tournaments or create a new tournament.

GET /api/v1/tournaments/?format=api&ordering=-analysis_enabled&page=308
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "description": "Tournoi",
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                "name": "Mathieulucas",
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        {
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            "name": "Admin Tournament Part TWO - WWGA",
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                "username": "aval.cado",
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