A big new nightclub complex is coming to Laclede's Landing this fall — with two different bar concepts, a stage for live music shows and a vape shop all in the works.The Roaring 20s(807 N. 2nd Street) will be located in the three-story, 23,000-square-foot building that until recently held the Royal Dumpe Dinner Theatre and, years before that, the Big Bang dueling piano bar. Under the vision of its new tenants, it will include a first-floor bar called the Blind Pig, complete with a restaurant; a second-floor nightclub called Noir, with a black-and-white-movie theme; and a third-floor space capable of hosting rock shows or theater productions.…