GREEN BAY, Wis. (AP) – The Green Bay Packers will start 2013 against the team that ended their last season.  The NFL unveiled the schedule Thursday, pitting the Packers against the 49ers in San Francisco Sept. 8. The NFC champion 49ers beat the Packers in the 2012 opener and in the playoffs in January.  Green Bay has one Monday night game, against Chicago Nov. 4, and three Sunday night contests: at Minnesota Oct. 27, at the New York Giants Nov. 17 and against Atlanta Dec. 8. The Packers will also be Detroit’s Thanksgiving Day opponent for the fourth time in seven years.  They host the Lions Oct. 6 and the Vikings Nov. 24 and close the season at the Bears Dec. 29.   Green Bay’s bye is Week 4, for games the weekend of Sept. 29.