Plenty of people who root for the Dodgers will be happy that Don Mattingly is coming back to manage the team for at least two more seasons beyond the next. Plenty of people who root for the Dodgers will be either unmoved or unhappy.Like most managers, but more than many, Mattingly has his supporters and his detractors. His supporters can point to the respect he commands in the clubhouse, gained by a borderline Hall of Fame playing career, and his upbeat, easygoing personality.