Weekend box office: 'Planet of the Apes' dawns again in the top spot

It turns out there wasn’t much of a contest at the box office this weekend after all. Although last weekend’s champ “Dawn of the Planet of the Apes,”“The Purge: Anarchy” and “Sex Tape” were all tracking in the $30 million range going into the frame, 20th Century Fox’s simian sequel dipped just 50 percent in its sophomore frame to an estimated $36...