By Kevin Breuninger, @KevinWilliamB, Dan Mangan, @_DanMangan
Donald Trump lost a battle to enforce a nondisclosure agreement with “Apprentice” contestant Omarosa Manigault Newman over a tell-all book she wrote about her brief stint in the White House. An arbitrator agreed with Manigault Newman’s argument that the nondisclosure agreement she signed while working for Trump’s 2016 campaign is…