Sony’s sci-fi adventure “Chappie” has opened with a modest $750,000 at latenight Thursday showings in the U.S. The film, which centers on a police robot that learns to think and feel, expands to 3,201 locations Friday. “Chappie,” directed by Neill Blomkamp (“District 9,″ “Elysium”), has been forecast as the top performer this weekend with an...