List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=handicap&page=160
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "description": "Like tournaments? Why not join this one?",
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            "description": "Let's start a tournament here. Invite some more players from SD to join!",
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