rework to use groups as main model for consents, implemented control center

...c/app/consent-management/provider/provider.component.html

...c/app/consent-management/provider/provider.component.scss

...src/app/consent-management/provider/provider.component.ts

...nsent-management/schema-change/schema-change.component.ts

...consent-management/verb-groups/verb-groups.component.html

...consent-management/verb-groups/verb-groups.component.scss

...sent-management/verb-groups/verb-groups.component.spec.ts

...p/consent-management/verb-groups/verb-groups.component.ts

...tend/src/app/control-center/control-center.component.html

...tend/src/app/control-center/control-center.component.scss

...d/src/app/control-center/control-center.component.spec.ts

...ontend/src/app/control-center/control-center.component.ts

...gs/create-verb-group-dialog/create-verb-group-dialog.html

...gs/create-verb-group-dialog/create-verb-group-dialog.scss

...logs/create-verb-group-dialog/create-verb-group-dialog.ts

src/frontend/src/app/home/home.component.html

src/frontend/src/app/home/home.component.scss

src/frontend/src/app/merge-data/merge-data.component.html

src/frontend/src/app/navigation/header/header.component.html

...tend/src/app/page-not-found/page-not-found.component.html