Returns detailed information about a ticket.
GET '/api/v2/tickets/2':
{
"id": 2,
"title": "second ticket",
"tags": ["tag1","tag2"],
"small_summary": "text",
"content": "text",
"status": "In Progress",
"user_id": 24,
"created_at": "2014-05-20T14:41:41+02:00",
"updated_at": "2014-05-20T14:41:41+02:00"
}