make debug pane optional and fix bug that tests get not locked on termination

src/app/test-controller/command.service.ts

src/app/test-controller/focus.service.ts

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

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

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

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