Add secondary muscle list to serializer
Add secondary muscle list to serializer


wger-project/wger,petervanderdoes/wger,rolandgeider/wger,petervanderdoes/wger,petervanderdoes/wger,petervanderdoes/wger,wger-project/wger,rolandgeider/wger,wger-project/wger,rolandgeider/wger,rolandgeider/wger,wger-project/wger