--The Mattapan teenager who was shot in the jaw yesterday has not been named but was a student and basketball player at Charlestown High. Also yesterday, a man was stabbed last night on Cambridge Street, and he is in the hospital with life-threatening injuries. --An armed robbery happened at the Au Bon Pain at Harvard Square the night of November 19. Matt Dunning Erin Smith at the Cambridge Chronicle reports that three masked robbers "tied......