Issue #1893108 follow-up by Berdir, dawehner: Rename EntityUnitBaseTest => EntityUnitTestBase to conform to coding standards.

Issue #1591806 by tim.plunkett, ryanissamson, jenlampton, Risse, psynaptic, Gábor Hojtsy, kmcculloch, pakmanlh, Rob Loach: Change block 'subject' so that it's called (admin_)label like everything else on the theme layer.

Issue #1848880 by Wim Leers, effulgentsia: Test order of AJAX commands: add Ajax\FrameworkTest::testOrder(), strengthen testLazyLoad(), fix JS settings not being prepended.

Issue #1884148 by sun, swentel: Fixed field widget disappears when increase cardinality for image to allow multiple values.

Issue #1662974 by barraponto, droplet, Albert Volkman, nitvirus, roborn, David Hernández: Clean up css in dblog.

Issue #1922396 by damiankloip: Add groupable_only() parameter to DisplayPluginBase::getFieldLabels().

Issue #1829224 by alexpott, pfrenssen, vijaycs85, lirantal: Convert the 'theme_default()' variable to CMI.

Issue #1929656 by dawehner: Fixed ModuleHandler::setModuleList() should call resetImplementations() in order to avoid edge cases.

Issue #1919934 by larowlan: Change key of custom block vertical tabs to use 'advanced' instead of 'additional_settings()'.

Issue #1836008 by dawehner, Berdir, alexpott, katbailey, effulgentsia, EclipseGc: Fixed Remove drupal_classloader() use in Drupal\Core\AnnotatedClassDiscovery.

Issue #1924774 by amateescu, larowlan: Add a helper function for easier creation of a entity reference instance programatically.

Issue #1853086 by katbailey, msonnabaum, alexpott: Remove cache.page.enabled in favor of an explicit internal cache setting.

Issue #1068840 by sun, TR, Alan D., droplet, Damien Tournoud, tim.plunkett: Fixed core/includes/standard.inc contains inaccurate country data.

Issue #722650 by alexpott, tim.plunkett, arpeggio: Fixed Shortcut doesn't properly clean up or store menu links.

Issue #1880368 by stephen.colson, echoz, babbage: More comprehensive fix for form elements can break out of their bounding divs and whatnot.

Issue #1922034 by jthorson: Fixed UpgradePathTestBase does not detect 'An unrecoverable error has occurred' install errors.

Issue #1920686 by swentel: Fixed Deleting a menu gives fatal error + the delete button is shown on system menu's.