List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=-time_start&page=3800
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
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            "description": "LEARN TO PLAY GO https://online-go.com/learn-to-play-go\n\nEXERCISES FOR BEGINNERS https://online-go.com/puzzle/2625\n\nThere is documentary about go SURROUNDING GAME, ALPHA GO and anime HIKARU NO GO\n\nThere is lots of useful links https://online-go.com/group/25, //// https://online-go.com/group/2014\n\nThis is Round Robin tournament means all games (number of players -1) begin Simultaneously maximum 9 games",
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                "name": "Final Frontier",
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