add demo user
add demo user

ct-jensschulze/sphere-neos-demo,ct-jensschulze/sphere-neos-demo,jayS-de/sphere-neos-demo,ct-jensschulze/sphere-neos-demo,jayS-de/sphere-neos-demo,jayS-de/sphere-neos-demo,jayS-de/sphere-neos-demo,ct-jensschulze/sphere-neos-demo,ct-jensschulze/sphere-neos-demo,jayS-de/sphere-neos-demo