Once upon a time, the heroes of Justice League International laughed. At enemies, at circumstances, even at each other. Those days are long gone, but DC Comics' New 52 reboot has revived the concept of a global team of superheroes. The tone's changed but many of the face remain the same, with Batman, Booster Gold,… » 1/26/12 12:30pm 1/26/12 12:30pm