All-Star Weekend is over, and the young kids — John Wall and Kyrie Irving — stole the spotlight from their older peers by winning the Slam Dunk title and the All-Star MVP awards. The other “young” guy on prominent display was Adam SIlver, the new commissioner, whose news conference Saturday evening was both balanced and boring. We learned that Silver grew up a Knicks fan, has no plans to expand the league beyond its current 30 teams, and wants to have all