Refactor of how the navigation menu is build/stored.

CHANGELOG.md

CRM/Contact/DataProcessorContactSearch.php

CRM/Dataprocessor/Utils/Importer.php

CRM/DataprocessorSearch/ActivitySearch.php

CRM/DataprocessorSearch/CaseSearch.php

CRM/DataprocessorSearch/ContributionSearch.php

CRM/DataprocessorSearch/MembershipSearch.php

CRM/DataprocessorSearch/ParticipantSearch.php

CRM/DataprocessorSearch/Search.php

Civi/DataProcessor/Output/UIOutputHelper.php

dataprocessor.php