Issue #2030743 by yingtho, runeasgar, marcingy, YesCT, damiankloip, larowlan, typhonius, dman, areke, Désiré: Improve tests for user form alters in contact module.
Issue #2294177 by alexpott: Allow Drupal\Core to provide [config] entity types.
Fix broken tests, rdf support
Merge branch '8.x' into 1962846-comment-wrapper