Though there is a sea of snapbacks, tonight The Academy is marked by a mixed crowd. It could be indicative of the widening appeal of serious hip hop in the last half decade or it could simply be the pure, well-rounded appeal, of one man. Because Action Bronson seems to have that kind of reach. By summoning up the ghosts of hip hop’s past and pressing them into intelligent and accessible hits the New York rapper has amassed quite a following. Hence the sold out show and the tight huddle reaching from the stage to the bar. But first it’s…