GREATEST SHOWMAN, THE (2017, USA) **½ Biography, Drama, Musical dist. Twentieth Century Fox; pr co. Bona Film Group / Chernin Entertainment / TSG Entertainment / Twentieth Century Fox; d. Michael Gracey; w. Jenny Bicks, Bill Condon (based on a story by Jenny Bicks); exec pr. Tonia Davis, Donald J. Lee Jr., James Mangold; pr. Peter…