Abby’s | Thursday, 9:30 p.m., NBC The bar in the NBC sitcom "Abby's" differs a bit from the one in the network's 1982-93 hit "Cheers." The setting is an illegal backyard speakeasy run by an ex-Marine named Abby (Natalie Morales), not a neighborhood hangout owned by a former pro ballplayer named Sam (played by Ted...