By Michael Lassell Disney Editions, 2004, 160 pp., hardcover $50. Those looking for a putdown of Celebration won’t find it in Celebration: The Story of a Town, which is a generally glowing account and assessment of Disney’s famous Florida new urban real estate development. In publishing the book, Disney claims to have sought out an independent author with an objective point of view. Manhattan resident Michael Lassell, a long-time editor at Metropolitan Home and avowed modernist, would seem a good choice.