Small fixes to permission checks for new gym users
Small fixes to permission checks for new gym users

Gym managers can edit their own gym only, general gym managers
can edit all gyms

DeveloperMal/wger,petervanderdoes/wger,petervanderdoes/wger,wger-project/wger,petervanderdoes/wger,kjagoo/wger_stark,wger-project/wger,petervanderdoes/wger,wger-project/wger,rolandgeider/wger,kjagoo/wger_stark,rolandgeider/wger,DeveloperMal/wger,DeveloperMal/wger,kjagoo/wger_stark,rolandgeider/wger,kjagoo/wger_stark,DeveloperMal/wger,rolandgeider/wger,wger-project/wger