NEW YORK — Actor Edward Norton is starring in a real-life drama about a community effort to save a beloved Bedford-Stuyvesant mansion from the wrecking ball. Norton has sided with residents and advocates who have appealed to the city’s Landmarks Preservation Committee to stop developers from turning the 120-year-old Willoughby Avene mansion, known as the Jacob Dangler House, into a condominium complex. “I believe this house, which has served a shifting but significant purpose for over a century, should absolutely be viewed as not just a spiritual and aesthetic connection to the past but as a m…