List all tournaments or create a new tournament.

GET /api/v1/tournaments/?format=api&ordering=-max_ranking&page=5585
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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                "require_invitation": false,
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                "admin_only_tournaments": false,
                "hide_details": false,
                "member_count": 269,
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            "auto_start_on_max": false,
            "time_start": "2017-03-23T17:05:00Z",
            "players_start": 4,
            "first_pairing_method": "slide",
            "subsequent_pairing_method": "slaughter",
            "min_ranking": 0,
            "max_ranking": 23,
            "analysis_enabled": true,
            "exclusivity": "open",
            "started": "2017-03-23T17:05:50.850641Z",
            "ended": "2017-03-23T17:24:48.309890Z",
            "start_waiting": "2017-03-23T17:05:50.454206Z",
            "board_size": 9,
            "active_round": null,
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            "player_count": 4,
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