Janie Marini was 10 years old when she traveled to the old Kezar Stadium in San Francisco to catch her first 49er game with her father. That was in 1958. Fifty-five years and countless games later. The unshakably devout 49er fan will attend her sixth Super Bowl in which her favorite team is competing. “I’ve always been into sports,” Marini said. “My husband and I got season tickets ourselves in our name 32 years ago. We go to all the games, and we travel to the away games. Over the years, we’ve been really fortunate. We’ve gone to the Super …