Patrick MichelsBill Kennedy onstage at The Majestic Friday night​Ned Startzel was 3 years old when the new Majestic Theatre opened on Elm Street in downtown Dallas in 1921. Startzel began writing shows, performed in Vaudeville acts and fought in World War II, while Dallas's theater row rose and fell around the Majestic -- with 10 neighboring theaters downtown, at one point.Last weekend Startzel brought his 2-year-old Spectacular Senior Follies revue to the Majestic's friendly confines, singing