In the same gallery with string art and postmodern bric-a-brac, a visit to the Hirshhorn’s third floor will now reveal the intricacy of contemporary drawing when it meets all-out boring honest to goodness work. From the same art student friends you’ve heard wax endlessly on about Art School Confidential and how “Drawing dude, that’s the new painting,” comes blabbing praise for the uncool, unneurotic, even chubby Marco Maggi. But this time they are dead…