Merge remote-tracking branch 'remotes/origin/master' into submission

# Conflicts:
#	package.json
#	src/app/+admin/admin-registries/metadata-schema/metadata-schema.component.spec.ts
#	src/app/+search-page/search-service/search.service.spec.ts
#	src/app/app.module.ts
#	src/app/core/auth/auth.interceptor.ts
#	src/app/core/cache/response-cache.service.spec.ts
#	src/app/core/data/browse-response-parsing.service.spec.ts
#	src/app/core/data/data.service.spec.ts
#	src/app/core/data/request.service.spec.ts
#	src/app/core/data/request.service.ts
#	src/app/core/dspace-rest-v2/dspace-rest-v2.service.ts
#	src/app/core/integration/integration.service.ts
#	src/app/core/metadata/metadata.service.spec.ts
#	src/app/core/registry/registry.service.spec.ts
#	src/app/core/shared/collection.model.ts
#	src/app/core/shared/item.model.ts
#	src/app/shared/form/builder/ds-dynamic-form-ui/models/dynamic-group/dynamic-group.component.spec.ts
#	src/app/shared/form/builder/ds-dynamic-form-ui/models/dynamic-group/dynamic-group.components.ts
#	src/app/shared/form/builder/ds-dynamic-form-ui/models/list/dynamic-list.component.ts
#	src/app/shared/form/builder/ds-dynamic-form-ui/models/lookup/dynamic-lookup.component.spec.ts
#	src/app/shared/form/builder/ds-dynamic-form-ui/models/lookup/dynamic-lookup.component.ts
#	src/app/shared/form/builder/ds-dynamic-form-ui/models/scrollable-dropdown/dynamic-scrollable-dropdown.component.ts
#	src/app/shared/form/builder/ds-dynamic-form-ui/models/tag/dynamic-tag.component.spec.ts
#	src/app/shared/form/builder/ds-dynamic-form-ui/models/tag/dynamic-tag.component.ts
#	src/app/shared/form/builder/ds-dynamic-form-ui/models/typeahead/dynamic-typeahead.component.ts
#	src/app/shared/form/builder/form-builder.service.spec.ts
#	src/app/shared/form/form.service.spec.ts
#	src/app/shared/notifications/notification/notification.component.spec.ts
#	src/app/shared/services/route.service.spec.ts
#	src/app/shared/services/route.service.ts
#	src/app/shared/shared.module.ts
#	yarn.lock