By Bob Allen Chick-fil-A founder S. Truett Cathy, a devout Southern Baptist layman known for building his business empire on principles of his Christian faith, died Sept. 8 at age 93. Cathy, who taught 13-year-old boys in Sunday school at First Baptist Church in Jonesboro, Ga., for more than 50 years, opened the first Chick-fil-A...