add a few test's; clean up some code parts

...lient/libs/command-shared/src/lib/command.service.spec.ts

goofy-client/libs/command-shared/src/lib/command.service.ts

...libs/forwarding-shared/src/lib/forwarding.service.spec.ts

...rgang-forward-form/vorgang-forward-form.component.spec.ts

...ar/vorgang-forward-form/vorgang-forward-form.component.ts

.../vorgang-forward-form/vorgang-forward.formservice.spec.ts

...mular/vorgang-forward-form/vorgang-forward.formservice.ts

...-container/vorgang-forwarding-container.component.spec.ts

...ner/vorgang-forward-zustellen-container.component.spec.ts

...container/kommentar-form/kommentar-form.component.spec.ts

...gang-container/kommentar-form/kommentar-form.component.ts

...ner/kommentar-list-in-vorgang-container.component.spec.ts

...ar-list-in-vorgang/kommentar-list-in-vorgang.component.ts

.../libs/ozg-file-shared/src/lib/ozg-file.repository.spec.ts

...ng-list-container/anhang-list-container.component.spec.ts

.../anhang-list-container/anhang-list-container.component.ts

...b/ozg-file-container/ozg-file-container.component.spec.ts

...abschliessen-button/abschliessen-button.component.spec.ts

...buttons/annehmen-button/annehmen-button.component.spec.ts

...ons/bearbeiten-button/bearbeiten-button.component.spec.ts