The Danbury Zoning Commission has approved an application by Bruce Bennett Nissan of Danbury to renovate the building that used to house Sports Authority and Bed, Bath and Beyond.  The 78-thousand square foot building would be converted into a showroom, office, 15 bay service center and parts storage.  The proposal for the 8-acre property off Sugar Hollow Road already received approval from the Environmental Impact Commission.  The Zoning Commission vote last night was unanimous.