Fan Fair Nick Krewen GRAMMY.COM   Farewell Fan Fair. When it wound down June 8 with a rare reunion of The Judds, the door closed on a 32-year tradition. Upon its return in 2004, the annual Nashville country music festival – which encourages fans to mingle with its stars – will be sporting a different name: the CMA (Country Music Association) Music Festival. More troubling to hardcore country music fans,…