Completely got rid of the admin credentials, only working with hashing

...entities/src/main/java/at/tuwien/entities/auth/Realm.java

...ies/src/main/java/at/tuwien/entities/user/Credential.java

.../entities/src/main/java/at/tuwien/entities/user/User.java

fda-ui/api/analyse/index.js

fda-ui/api/container/index.js

fda-ui/api/database/index.js

fda-ui/api/table/index.js

fda-ui/api/user/index.js

fda-ui/components/DatabaseList.vue

fda-ui/config.js

fda-ui/layouts/default.vue

fda-ui/nuxt.config.js

fda-ui/package.json

...ontainer/_container_id/database/_database_id/settings.vue

...iner/_container_id/database/_database_id/table/import.vue

fda-ui/utils/index.js

fda-user-service/pom.xml

...ervice/src/main/java/at/tuwien/endpoint/UserEndpoint.java

...main/java/at/tuwien/exception/RealmNotFoundException.java

.../java/at/tuwien/exception/UserAlreadyExistsException.java