Donald Trump will appear in his first extensive post-election interview Sunday on “60 Minutes” at 7 p.m. ET/PT After frequently deploying his controversial Twitter account over the last year to wage his White House campaign, President-elect Donald Trump is now promising to be “very restrained” with his use of the social media platform while in the Oval Office. “60 Minutes” correspondent Lesley Stahl, in an interview to air Sunday on CBS, asked Trump whether he would continue utilizing Twitter as president. Trump replied with this: “I’m going to be very restrained, if I use it at all, I’m going to...