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

Issue #2008270 by typhonius, mcjim, Wim Leers, vijaycs85, mr.baileys, JohnAlbin: Remove drupal_add_css() from template_preprocess_maintenance_page() — use #attached.

Issue #2136641 by damiankloip: Remove boolean usage of ajax property in Views UI link operation building.

Issue #2031725 by fgm, fago, vladan.me, Nebel54, Berdir: Move all entity display interfaces to the core component.

Issue #1786490 by Berdir, amateescu, damiankloip, Wim Leers, dawehner: Add caching to the state system.

Revert "Issue #1786490 by Berdir, amateescu, damiankloip, dawehner: Add caching to the state system."

This reverts commit 8ec847cc.

Issue #2073123 by dsdeiz, maartendeblock | xtfer: Drupal_clean_css_identifier() allows invalid CSS identifiers.

Issue #2115025 by Gábor Hojtsy, pfrenssen, dawehner: Content admin views title saved localized to the menu table.

Issue #2109793 by damiankloip, dawehner, tim.plunkett: Convert element_* methods in common.inc to a class.

Issue #1998638 by damiankloip, dawehner, kim.pepper, cosmicdreams, alexpott, larowlan, Damien Tournoud: Replace almost all remaining superglobals (, , etc.) with Symfony Request object.

Issue #2109287 by dawehner, Cottser, tim.plunkett, kim.pepper: Replace list_themes() with a service.

Issue #2111349 by dawehner, tim.plunkett: Move format_plural to the string translation service and format_interval to the date service.

Issue #1998638 by damiankloip, dawehner, kim.pepper, cosmicdreams, larowlan, Damien Tournoud: Replace all remaining superglobals (, , etc.) with Symfony Request object.

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.