Stand clear of the platform edge and then some: A 14-year-old boy fell into the tracks at the Kings Highway subway station when the platform partially collapsed. Avi Katz was able to get away before the approaching Q train made it into the station. Katz had been at the station around 6PM on January 29 and, per WABC 7, "stepped onto the edge of the platform to see if his train was coming." The platform,......