Issue #2369933 by amateescu: Fixed Remove references to an exception class that doesn't exist (\Drupal\entity_reference\Exception\MissingDefaultValueException).
Issue #2369733 by mcdruid: Fixed No End of "addtogroup hooks" in search.api.php.
Issue #2354597 by esod, YesCT, vadim.hirbu, ashutoshsngh: Remove usage of form_set_value().