Added error handling for empty delegation input.#2523

lovoll wants to merge 2 commits intomainAltinn/altinn-authorization-tmp:mainfrom

feature/remilovoll/26/03/2436-AddErrorWhenDelegatingNothingAltinn/altinn-authorization-tmp:feature/remilovoll/26/03/2436-AddErrorWhenDelegatingNothingCopy head branch name to clipboard