added devise key as the app otherwhise won't start in production mode
added devise key as the app otherwhise won't start in production mode

chrisma/event-und-raumplanung,chrisma/event-und-raumplanung,chrisma/event-und-raumplanung,hpi-swt2/event-und-raumplanung,hpi-swt2/event-und-raumplanung