Issue #2081133 by mrsinguyen, dsdeiz, janstoeckler: Remove Unused local variable from /core/includes/menu.inc.

Issue #1988612 by effulgentsia, yched, Wim Leers, Berdir, Pancho: Apply formatters and widgets to rendered entity base fields, starting with node.title.

Issue #2121775 by jessebeach: Make the markup associated with the required star on field items silent.

Issue #787896 by nod_, cha0s, jp.stacey, sun, David_Rothstein, Bojhan, lisarex: Add a link so that administrators can return to their most recently visited non-admin page.

Issue #675446 by mgifford, RobLoach, amateescu, nod_, longwave, oxyc, rteijeiro, tomyouds, Jelle_S, mcrittenden, Sutharsan, hansyg, Angry Dan, clemens.tolboom, droplet | Dave Reid: Change notice: Use jQuery UI Autocomplete.

Temporary rollback since it conflicts with a critical issue.

This reverts commit ce08ea73.

Issue #2099205 by Wim Leers, zero2one, Gábor Hojtsy: When uploading and inserting an image trough the WYSIWYG plugin a relative path should be used for the image source (src) .

Revert "Issue #1954892 by dawehner, tim.plunkett, David_Rothstein, effulgentsia: Replace 'theme callback' and hook_custom_theme() with a clean theme negotiation system."

This reverts commit fc04601c.

Issue #2004086 by dawehner, pwolanin, katbailey, tim.plunkett, vijaycs85, fabpot: The Request service must be synthetic.

Issue #1954892 by dawehner, tim.plunkett, David_Rothstein, effulgentsia: Replace 'theme callback' and hook_custom_theme() with a clean theme negotiation system.

Issue #2118703 by Wim Leers, amateescu: Introduce #post_render_cache callback to allow for personalization without breaking the render cache.

Issue #2093167 by johnnydarkko, thedavidmeister, Vibjerg: Deprecate check_plain(), call \Drupal\Component\Utility\String::checkPlain() directly instead.

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

Issue #2084463 by dawehner, pwolanin, David_Rothstein, tim.plunkett, Xano: Convert contextual links to a plugin system similar to local tasks/actions.

Issue #2019055 by plach, fago, berdir, yched, Gábor Hojtsy, kfritsche, jibran: Switch from field-level language fallback to entity-level language fallback.

Revert "Issue #2019055 by plach, fago, kfritsche: Switch from field-level language fallback to entity-level language fallback."

This reverts commit 46942cd3.

Issue #2019055 by plach, fago, kfritsche: Switch from field-level language fallback to entity-level language fallback.

Issue #2066535 by tim.plunkett, jsst, Berdir: Add EntityManagerInterface and stop typehinting with EntityManager.

Issue #2048223 by dawehner, ParisLiakos, herom, fubhy, damiankloip, vijaycs85, joelpittet, tim.plunkett: Add $account argument to AccessCheckInterface::access() method and use the current_user() service.