In the basement of Centenary Church, at the end of a narrow hallway in a bright room, sits the Shinzo Zen Meditation Center (1610 Olive Street) —a Zen Buddhist organization seeking to bring peace to a hectic urban landscape. Founded by teacher Reverend Kalen McAllister in 2005, the center has moved from McAllister's home to a carriage house to All Saints Catholic Church in University City.…