List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=players_start&page=556
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "description": "<h2 style=\"color:red\">No vacation allowed</h2>\n\n<h3>Only 4-hour increment!</h3>\n\n<hr/>\n\nI've run out of appropriate cat names.\n\nJoin the group for more cat tournaments ^__^",
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