CHICAGO (AP) – The Green Bay Packers clinched their second straight NFC North title with a 21-13 victory over the archrival Chicago Bears on Sunday.  James Jones caught all three touchdown passes thrown by the Packers’ Aaron Rodgers. Green Bay has now won six straight in the NFL’s oldest – and fiercest – rivalry.        The Packers (10-4) have won 12 straight against NFC North opponents, the longest streak in the NFL.  Brandon Marshall had a 15-yard TD catch for the Bears, who have lost five of six and are in danger of missing the playoffs after beginning the year 7-1. Clay Matthews continued his torture of Jay Cutler with two sacks, and Alshon Jeffery hurt the Bears (8-6) with three offensive pass interference calls late in the second half.