1. resultLanding.component.ts: Get provenanceAction vocabulary from ISVocabulariesService.
2. resultLanding.service.ts: Remove methods for "provenanceAction" vocabulary | [Bug fix] Do not stringify "dateofacceptance" when undefined.
3. ISVocabularies.service.ts: Add BehaviorSubjects for vocabularies | Add methods for provenanceAction vocabulary (called by result landing pages).
4. staticAutoComplete.module.ts: Remove ISVocabulariesService from providers (singleton service, providedIn: 'root').
git-svn-id: https://svn.driver.research-infrastructures.eu/driver/dnet40/modules/uoa-services-library/trunk/ng-openaire-library/src/app@59072 d315682c-612b-4755-9ff5-7f18f6832af3
konstantina.galouni
argiro.kokogiannaki