Issue #1899910 by tim.plunkett: Fixed Regression: Views blocks should not have an editable label.
Issue #1893818 by Berdir: Fixed Plugin discovery caches of blocks are not cleared for all languages.
Issue #1866910 by damiankloip: Add an ajaxEnabled() method for ViewExecutable.
Issue #1826602 by damiankloip, xjm, sun, dawehner, EclipseGc: Allow all configuration entities to be enabled/disabled.
Issue #1903176 by tim.plunkett: Add a drupal_build_form() helper for using a method as the callback.
Issue #1893818 by Berdir, tim.plunkett, sun: Fixed Plugin discovery caches of blocks are not cleared for all languages.
Issue #1803638 by vijaycs85, YesCT: Improve default language change process (ui and help text).
Issue #1912748 by samhassell: Rename ' Views Modules' test group.
Issue #1913084 by tim.plunkett: Introduce a Form interface for building, validating, and submitting forms.
Issue #1864066 by sun, andypost, tim.plunkett: Simplify hook_menu_local_tasks() and MENU_DEFAULT_LOCAL_TASK usage.
Issue #1913084 by tim.plunkett: Introduce a Form interface for building, validating, and submitting forms.
Merge branch '8.x' of git.drupal.org:project/drupal into 8.x
Issue #1871772 by larowlan, EclipseGc: Convert custom blocks to content entities.
Issue #1891516 by sun, Berdir, chx: Remove $install parameter from DrupalUnitTestBase::enableModules(), encourage to create individual schema tables only.
Issue #1927534 by nick_schuch, larowlan: Fix override docs on an entity block class method
Issue #1919928 by larowlan: Resolve usage of 'view content' permission in modules other than Node.
Issue #1919022 by Berdir: Remove translatable tag.
Issue #1836008 by dawehner, Berdir, alexpott, katbailey, effulgentsia, EclipseGc: Fixed Remove drupal_classloader() use in Drupal\Core\AnnotatedClassDiscovery.
Issue #1919926 by larowlan, sun: Fixed Simplify custom_block_menu_local_tasks_alter().
Issue #1919934 by larowlan: Change key of custom block vertical tabs to use 'advanced' instead of 'additional_settings()'.