Revert "Issue #2278383 by Xano, dawehner, kim.pepper, twistor, joelpittet, Fabianx, Crell, jibran, alexpott, Wim Leers: Create an injectible service for drupal_set_message()"

This reverts commit ee222725.

Issue #2659070 by Wim Leers, dawehner, tic2000, Crell: REST requests without Content-Type header: unhelpful response significantly hinders DX, should receive a 415 response

Issue #2694555 by amateescu, vasi, dawehner, heddn, therealssj: Node revisions don't display translated

Issue #2474273 by mesch: Update Documentation for \Drupal\Core\Field\FieldStorageDefinitionInterface::getSchema()

Issue #2278383 by Xano, dawehner, kim.pepper, twistor, joelpittet, Fabianx, Crell, jibran, alexpott, Wim Leers: Create an injectible service for drupal_set_message()

Issue #2403307 by dawehner, marthinal, tedbow, clemens.tolboom, Wim Leers, neclimdul, Crell, klausi, andypost, e0ipso: RPC endpoints for user authentication: log in, check login status, log out

Revert "Issue #2403307 by dawehner, marthinal, tedbow, clemens.tolboom, Wim Leers, neclimdul, Crell, klausi, andypost, e0ipso: RPC endpoints for user authentication: log in, check login status, log out"

This reverts commit 18feefc3.

Issue #2771331 by johan.gant: drupal/core-uuid composer.json not tested by \Drupal\Tests\ComposerIntegrationTest::testComposerJson()

Issue #2403307 by dawehner, marthinal, tedbow, clemens.tolboom, Wim Leers, neclimdul, Crell, klausi, andypost, e0ipso: RPC endpoints for user authentication: log in, check login status, log out

Issue #2468375 by tduong, joaquin.solino, Berdir, David4514: Status Reports: The following token types are not defined but have tokens - $info['types']['entity']

Issue #2546004 by neclimdul, quietone, hussainweb, benjy, phenaproxima, mikeryan: Add message service to migrate events

Issue #2772979 by hchonov: Enforcing a cloned entity translation to be new propagates to the original entity

Issue #2763157 by tim.plunkett, tedbow, chx, bojanz, twistor, neclimdul, dawehner, Xano, EclipseGc: Allow plugins to provide multiple forms

Revert "Issue #2773197 by jalpesh, tstoeckler: DefaultHtmlRouteProviderTest::testGetCollectionRoute() has wrong @covers"

This reverts commit a470bc0c.

Issue #2773197 by jalpesh, tstoeckler: DefaultHtmlRouteProviderTest::testGetCollectionRoute() has wrong @covers

Issue #2702661 by alexpott, nevergone, GoZ, jibran, dawehner, xjm, hgoto, droplet: Make it simple to take screenshots whilst using JavascriptTestBase

Issue #1869548 by dawehner, jeqq, dmouse, damiankloip, nod_, AlxVallejo, chr.fritsch, yanniboi, effulgentsia, dixon_, -enzo-, Wim Leers, Crell, Damien Tournoud, andypost, kim.pepper, linclark, catch: Opt-in CORS support

Issue #2362435 by hampercm, markdorison, Alienpruts, lokapujya, Wim Leers, deepakaryan1988, amateescu, martin107, alvar0hurtad0, sdelbosc, tadityar, nlisgo, timmillwood, Palashvijay4O, googletorp, kerby70, adamzimmermann, tstoeckler, dawehner, tkoleary, Crell, legolasbo: When viewing a revision, the Quick Edit, Edit, and Delete contextual link operations are available, but should not be

Issue #2090937 by darketaine, thpoul, Wim Leers, ironkiat, kostyashupenko, himanshugautam, Cottser, davidhernandez, Reinmar, Bojhan, tic2000, LewisNyman, emma.maria: Seven theme: style CKEditor-native dialogs to match Drupal-native dialogs

Issue #2773197 by jalpesh, tstoeckler: DefaultHtmlRouteProviderTest::testGetCollectionRoute() has wrong @covers

Issue #2688945 by tduong, amateescu, timmillwood, alexpott, joachim, xjm, yoroy, ifrik, Berdir, Gábor Hojtsy, Bojhan, webchick, cilefen, dawehner: Allow removing a module's content entities prior to module uninstallation

Issue #2759853 by klausi, dawehner: Create ConfigTestTrait to share code between PHPUnit and Simpletest

Issue #2759247 by Wim Leers: Request attribute removed from DynamicPageCacheSubscriber, but comment was not updated

Issue #2759879 by klausi, claudiu.cristea, dawehner, xjm, Lendude, jibran: Additional assertions for WebAssert and AssertLegacyTrait, part 2

Issue #2769835 by Anul, davidtoltesy, Gábor Hojtsy, csg, Manjit.Singh: It is not clear if the password strength box is a list of suggestions or mandatory

This reverts commit 6418a1c5.

Issue #2611044 by felribeiro, theMusician, Nikhilesh Gupta, cilefen: SystemInfoController::status - wrong documentation (follow-up to fix whitespace)

Issue #2611044 by felribeiro, theMusician, Nikhilesh Gupta, cilefen: SystemInfoController::status - wrong documentation

Issue #2607548 by krknth, Erno: Missing title_prefix, title_suffix, attributes available variables for aggregator twig files

Issue #2753681 by tedbow, Wim Leers, dawehner, neclimdul, catch: Move CSRF header token out of REST module so that user module can use it, as well as any contrib module

Issue #2669326 by danielbeeke, Xano, yongt9412, swentel, jmuzz, Sutharsan: FileWidget inside subform can't find its values

Issue #2223073 by stefan.r, superspring, daffie, Dave Reid, Jalandhar: Calling DatabaseSchema::getPrefixInfo() on a non-default connection returns the wrong database - write tests

Issue #2704743 by yongt9412, amateescu, Berdir: Remove special case on EntityFormatter for new entities

Issue #1145076 by daffie, David_Rothstein, johnnydarkko, cbergmann, drewish, rpayanm, somersoft, jhedstrom: UNION queries don't support ORDER BY clauses

Issue #2754783 by danmuzyka, jhedstrom, alexpott: hook_entity_display_build_alter() only affects final entity in $build_list array