Merge branch 'master' of github.com:iqb-berlin/testcenter-frontend

package-lock.json

package.json

src/app/group-monitor/backend.service.ts

src/app/group-monitor/group-monitor.component.css

src/app/group-monitor/group-monitor.component.html

src/app/group-monitor/group-monitor.component.ts

src/app/group-monitor/group-monitor.interfaces.ts

src/app/group-monitor/group-monitor.module.ts

src/app/group-monitor/test-view/test-view.component.css

src/app/group-monitor/test-view/test-view.component.html

src/app/group-monitor/test-view/test-view.component.spec.ts

src/app/group-monitor/test-view/test-view.component.ts

src/app/test-controller/test-controller.component.ts

.../test-controller/unlock-input/unlock-input.component.html

src/environments/environment.dev.ts

src/environments/environment.prod.ts