Config(Ability.rb): Add ability.rb for cancancan
Config(Ability.rb): Add ability.rb for cancancan

hpi-swt2/workshop-portal,hpi-schuelerklub/workshop-portal,hpi-swt2/workshop-portal,hpi-schuelerklub/workshop-portal,hpi-schuelerklub/workshop-portal,hpi-swt2/workshop-portal