The Teen Titans Project, Part XXVII:  Changing of the Guard (2007)               By 2007, the Teen Titans had been involved in DC’s company-wide story for about a year and half.  With Infinite Crisis now out of the way, the Titans were able to return to their own story.  However, that didn’t mean 2007 was any more settled than the previous years.  It also didn’t preclude the Titans from experie…