List all tournaments or create a new tournament.

GET /api/v1/tournaments/?format=api&ordering=-max_ranking&page=5770
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "name": "telmich's experimental tournaments - round 2",
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            "description": "This is the second tournament I'm organising - this time we are using double elimination - stay focused to stay in!",
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            "description": "The first Mid Kyu Round Robin being almost over,  I thought to offer another.  Same conditions and rules.",
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            "description": "If you want to be stronger, then you should often play with those who are a little stronger than you. Training Grounds tournaments provide you with this opportunity.",
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            "description": "Let's have some fun",
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            "description": "!! players on vacation will be disqualified !!",
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