Festive lights have been switched on early along Main Street in Ridgefield.  First Selectman Rudy Marconi says it's been a difficult year for residents young and old.  The tree lights -- sponsored by contributions from the Holiday Trust Fund, and the downtown Ridgefield Association –are a popular Ridgefield tradition. Most years, the lights are switched on formally on the Friday evening after Thanksgiving while hundreds gather to participate in a ceremony, listen to seasonal music and welcome Santa.  Marconi says there are changes this year, made to keep everyone safe. He says they decided to get the lights on as soon as possible as a reflection of the community’s spirit and as a special gift to the kids who have been doing a great job dealing with school and social restrictions.