Fixed tests

...istries/metadata-schema/metadata-schema.component.spec.ts

src/app/+item-page/item-page.module.ts

src/app/+login-page/login-page.component.spec.ts

src/app/core/browse/browse.service.spec.ts

src/app/core/data/request.service.spec.ts

src/app/core/metadata/metadata.service.spec.ts

src/app/core/shared/item.model.ts

src/app/core/shared/operators.spec.ts

...m-ui/models/dynamic-group/dynamic-group.component.spec.ts

src/app/shared/form/form.service.spec.ts