Robert Morse, who translated Broadway stardom into a film career in the 1960s, then re-emerged decades later as one of the stars of “Mad Men,” has died. He was 90. Writer-producer Larry Karaszewski, who serves as a VP on the board of governors for the Academy of Motion Picture Arts and Sciences, tweeted news of Morse’s death on Thursday. “My good pal Bobby Morse has passed away at age 90,” he wrote. “A huge talent and a beautiful spirit. Sending love to his son Charlie & daughter Allyn. Had so m