OZG-3574 impl PR comments; add TODOs/FIXMEs; cleanup

...e2e/src/components/vorgang/vorgang-views.e2e.component.ts

.../main-tests/vorgang-list/vorgang-views-filter.spec-e2e.ts

goofy-client/apps/goofy-e2e/src/support/commands.ts

goofy-client/apps/goofy/src/app/app.component.spec.ts

goofy-client/apps/goofy/src/styles/abstracts/_variables.scss

...y-client/libs/api-root-shared/src/lib/api-root.linkrel.ts

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

...ient/libs/navigation-shared/src/lib/navigation.service.ts

...ent/libs/vorgang-shared/src/lib/+state/vorgang.actions.ts

...ibs/vorgang-shared/src/lib/+state/vorgang.effects.spec.ts

...ient/libs/vorgang-shared/src/lib/+state/vorgang.facade.ts

...s/vorgang-shared/src/lib/+state/vorgang.selectors.spec.ts

...t/libs/vorgang-shared/src/lib/+state/vorgang.selectors.ts

...bs/vorgang-shared/src/lib/vorgang-navigation.util.spec.ts

...nt/libs/vorgang-shared/src/lib/vorgang-navigation.util.ts

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

...er/vorgang-filter-menu/vorgang-filter-menu.component.html

...er/vorgang-filter-menu/vorgang-filter-menu.component.scss

...iner/vorgang-filter-menu/vorgang-filter-menu.component.ts

...rc/lib/vorgang-list-page/vorgang-list-page.component.scss