Former Donald Trump biographer David Cay Johnston attacked the former president as nothing more than a teenage boy who, despite his claims, would not be willing to go to prison. Trump is accused of falsifying business records to hide a hush money payment designed to keep details of an alleged sexual relationship with adult film star Stormy Daniels under wraps. Speaking to MSNBC on Tuesday during Daniels’ testimony, Johnston explained that Trump isn’t capable of being a “martyr” and going to jail for violating a gag order put in place to stop him attacking potential witnesses and jurors in the …