Issue #1886448 by dawehner, sun, Berdir, ParisLiakos: Rewrite the theme registry into a proper service.

Issue #2073531 by tim.plunkett, dawehner, Berdir, catch, plach: Use current user service instead of _account, remove _account from the request object.

Issue #2133469 by tim.plunkett, damiankloip, dawehner: Replace path-based entity links with route names.

Issue #2101427 by David_Rothstein, evilehk, nod_: Follow-up: Browser validation error with Chrome on hidden required fields, even on forms that don't allow client-side validation.

Issue #2020111 by damiankloip, a_c_m, dawehner, tim.plunkett: Allow the "With selection" label on bulk operation to be configured.

Issue #2133897 by Wim Leers: Clean up Edit: don't pass AJAX URLs from the server to the client through drupalSettings, use Drupal.url() instead.

Issue #2133907 by Wim Leers: Clean up Edit's in-place editors: consistent naming, library naming and file naming.

Issue #1956448 by benjy, tim.plunkett, ed.hollinghurst, YesCT: Use the block instance title on the block admin listing.

Issue #2085201 by jessebeach, tim.plunkett, dawehner, yoroy: Use sensible block categories (rather than module-name categories).

Issue #2121461 by Xano: \Drupal\Core\EventSubscriber\ViewSubscriber::onHtml() does not allow controllers to return string content.

Issue #1912806 by dcrocks, marthinal, jthorson, amateescu, julien, sun: Regression: 'User Account' displayed on front page for anonymous users.

Issue #1959338 by superspring, urwen, tim.plunkett, damiankloip: Reroll: Remove PHP4-style references for objects.

Issue #2119471 by Xano, swentel, amateescu: FieldInterface::getBundles() no longer needs to be nested.

Issue #1798296 by damiankloip, Xano, David_Rothstein, Crell, dawehner: Integrate CSRF link token directly into routing system.

Issue #2105947 by vijaycs85, japerry: Make sure all config yml files in Entity Reference module has no type-casting to string.

Issue #2032895 by balsama, yannickoo, corbacho, Kendall Totten: Follow-up use better technique for vertical centering.