Update to keycloak auth provider, refactor minor setting

.gitlab-ci.yml

README.md

VERSION.txt

package-lock.json

package.json

projects/kypo-trainings-clustering-viz-lib/package.json

...sualization/api/visualization-data-default-api.service.ts

...nts/visualizations/scatter-plot/scatter-plot.component.ts

...omponents/visualizations/visualizations.component.spec.ts

src/app/app.component.spec.ts

src/environments/environment.local.ts

src/environments/environment.prod.ts

src/environments/environment.ts