\Revert "Issue #2915673 by borisson_, alexpott, Gábor Hojtsy: Ignore coding standards in sites/* PHP files as they are for configuration and not real code"

This reverts commit 1e4d1e61.

Issue #2915673 by borisson_, alexpott, Gábor Hojtsy: Ignore coding standards in sites/* PHP files as they are for configuration and not real code

(cherry picked from commit fdce9b70)

Issue #2914668 by Jo Fitzgerald, shashikant_chauhan, heddn, quietone: MigrateNodeDeriverTest::testNoTranslations() does not install node module

(cherry picked from commit ccde72d3)

(cherry picked from commit 2483ca13)

(cherry picked from commit 3f3170a024918a984f6340970d86acd77a1970d2)

Issue #2825204 by dawehner, BR0kEN, xjm, pcambra, Wim Leers, tim.plunkett, tstoeckler, damiankloip, larowlan, effulgentsia, alexpott: REST views: authentication is broken

(cherry picked from commit ff6381f7)

Issue #2905227 by maxocub, yoroy, jjpoole, heddn, phenaproxima, vulcanr, quietone, wturrell, xjm: Migrate UI: Improve 'Review Upgrade' page UX

(cherry picked from commit 8e7dff7a)

Issue #2912120 by phenaproxima, heddn, Berdir, quietone, maxocub: Migrations with a highwater property are not applying correct orderBy() on first run

(cherry picked from commit a857500b44ee699e7f09335f6779699174d4fc2c)

Revert "Issue #2843765 by vaplas: EntityResource: Provide comprehensive test coverage for EntityViewDisplay entity"

This reverts commit 7af4f71d.

Revert "Issue #2701393 by tim.plunkett, Wim Leers, thpoul, xjm: Switching between editors on the format configuration causes errors upon save"

This reverts commit ac93a4c1.

This reverts commit e9c9ee52.

Issue #2888905 by vaplas, Lendude: ConvertConfigTranslationUiTest WTB to JTB & BTB for config_translation module

(cherry picked from commit 8145b338)

Issue #2843765 by vaplas: EntityResource: Provide comprehensive test coverage for EntityViewDisplay entity

(cherry picked from commit 50f08589)

Issue #2909164 by drunken monkey, dawehner: Fatal error with stub container in DependencySerializationTrait::__wakeup()

(cherry picked from commit 03c824aa7fe49c9b59d46f279c6b8ae3e0c3499c)

(cherry picked from commit e9c9ee52)

Issue #2701393 by tim.plunkett, Wim Leers, thpoul, xjm: Switching between editors on the format configuration causes errors upon save

(cherry picked from commit 31d6b580)

(cherry picked from commit e119f672)

(cherry picked from commit 66cbd7c9)

Issue #2897254 by Jo Fitzgerald, heddn, rakesh.gectcr, maxocub, masipila, phenaproxima, larowlan: URLs without http:// are broken after migration from d6 or d7

(cherry picked from commit 40bfcadbb04d77832977dfbd6989df317e8ffc95)

Issue #2887311 by naveenvalecha, vaplas, Lendude: Convert BlockContentTypeTest web tests to browser tests for block_content module

(cherry picked from commit df974e5b)

Issue #2809483 by michielnugter, ApacheEx, Lendude, dawehner: Convert AJAX part of \Drupal\field\Tests\FormTest::testFieldFormJSAddMore to JavascriptTestBase

(cherry picked from commit 99ea6ac0)

Issue #2870439 by vaplas, andypost, Jo Fitzgerald, jonathan1055, Lendude, dawehner, alexpott, GoZ: Convert web tests to browser tests for config module

(cherry picked from commit eef3306f)

(cherry picked from commit b99891bb29d8eda322e34166c19668e9867dbcdb)

Issue #2870457 by ApacheEx, andypost, dawehner, naveenvalecha, vaplas, nlisgo, Wim Leers, Lendude, alexpott: Convert web tests to browser tests for page_cache module

(cherry picked from commit 40698c6c)

Issue #2910081 by mpdonadio, neclimdul, gambry, jhedstrom, alexpott: DateTimePlus calls should be chainable

(cherry picked from commit 119362ce)

Issue #2915900 by David_Rothstein: MAINTAINERS.txt doesn't indicate that the database API is in need of a maintainer

(cherry picked from commit 5abe312c)

(cherry picked from commit af3691e6)

(cherry picked from commit 969cafbf)

(cherry picked from commit a08af1ac)

Issue #2573807 by 20th, Sam152, msgph, sherakama, heikki, jcnventura, Wim Leers: Fatal error: Call to a member function getTimestamp()

(cherry picked from commit 505f3bf8)

Issue #2843781 by vaplas, Wim Leers: EntityResource: Provide comprehensive test coverage for EntityViewMode entity

(cherry picked from commit 43c0eca7)

(cherry picked from commit 6fa729a50ea1780ae85f6dcfee554ac5773f5fac)

(cherry picked from commit fd8d9839)