Fix: computation of new links was not including the non-duplication rule
Fix: computation of new links was not including the non-duplication rule

Conflicts:
	app/service/BlockchainService.js

duniter/duniter,duniter/duniter,duniter/duniter,blaurent49/duniter,duniter/duniter,blaurent49/duniter,blaurent49/duniter,duniter/duniter,duniter/duniter,blaurent49/duniter