LOS ANGELES — Rebellious apes have held off Southern maids for a narrow win at the weekend box office. Studio estimates Sunday pegged “Rise of the Planet of the Apes” at $27.5 million, good enough for its second-straight No. 1 finish. The movie raised its 10-day total to $104.9 million. The “Planet of the Apes” prequel came in just ahead of “The Help,” a drama about Mississippi maids during the civil-rights movement that debuted at No.