Omarosa Manigault Newman could probably use a few tweets from President Trump right about now. The former reality star-turned-White House senior adviser has reportedly seen a dramatic dip in book sales since her Aug. 14 release of “Unhinged,” which recounts her brief time as a staffer. According to the Washington Post, hardcover sales dropped by more than 40 percent after the first week — when she managed to sell 34,000 copies following a Trump Twitter tirade. “When you give a crazed, crying lowlife a break, and give her a job at the White House, I guess it just didn’t work...