(cherry picked from commit f45d8df4)

Issue #3207968 by quietone, longwave, Spokje: Replace @codingStandards comments with phpcs: comments

(cherry picked from commit 6802ea33)

Issue #3209628 by longwave, rachel_norfolk, antiorario, phenaproxima, rootwork, larowlan, neclimdul, Maeglin: Add Permissions-Policy header to block Google FLoC

(cherry picked from commit 573e752f)

Issue #3041885 by tedbow, beautifulmind, dww, ayushmishra206, phenaproxima, webchick, xjm, AaronMcHale, larowlan, benjifisher, heddn, catch, jhodgdon, longwave, mglaman, alexpott, mxr576, effulgentsia: Display relevant Security Advisories data for Drupal

(cherry picked from commit 79dd8321)

Issue #3195533 by daffie, longwave: [Symfony 6] The constant Symfony\Component\HttpFoundation\Request::HEADER_X_FORWARDED_ALL is deprecated

Issue #2238561 by alexpott, dawehner, andypost, bradjones1, ridhimaabrol24, jofitz, eiriksm, Darren Oh, kalyansamanta, znerol, neclimdul, catch, pwolanin: Use the default PHP session ID instead of generating a custom one

Issue #3138746 by jungle, rajandro, sja112, longwave, jameszhang023, quietone, dww: Fix 45 "shouldBeCamelCased" and related typos in core

Issue #1538118 by dww, swentel, dawehner, pwolanin, sanduhrs, alexpott, ayushmishra206, Wim Leers, yogeshmpawar, mgifford, cilefen, David_Rothstein, drumm, larowlan, Heine, colan, tedbow, benjifisher, klausi, borisson_, quietone: Update status does not verify the identity or authenticity of the release history URL

Issue #3158589 by bhushan.nagaonkar, brittany.huntzberry, ankithashetty, cilefen, alexpott, davidhernandez, nijolawrence: Improve comment in default.settings.php

Issue #3089957 by dww, Krzysztof Domański, Wim Leers, mr.baileys: Set X-Drupal-Cache-Max-Age to aid in debugging #cache fun

Issue #3055189 by mikelutz, catch, alexpott: [Symfony 5] Support for mapping keys in multi-line blocks is deprecated since Symfony 4.3 and will throw a ParseException in 5.0

Issue #3138718 by sja112, longwave, dww, xjm, alexpott: Convert British English spellings to American English, for the umpteenth time

Issue #3120096 by alexpott, daffie, effulgentsia, Neslee Canil Pinto, xjm, mondrake, catch, ravi.shankar: Support contrib database driver directories in a fixed location in a module

Issue #2746541 by quietone, alexpott, maxocub, Wim Leers, mikelutz, jofitz, masipila, firewaller, Madhura BK, Gábor Hojtsy, catch, heddn, plach, hchonov: Migrate D6 and D7 node revision translations to D8

Issue #3020296 by alexpott, longwave, bradjones1, catch, Berdir, gapple: Remove Symfony's classloader as it does not exist in Symfony 4

Issue #2586887 by LittleCoding, Cottser, webchick, gambry, alexpott, joachim, joelpittet, lauri, xjm: Remove bogus theme config override example from default.settings.php

Issue #3079029 by bircher, ricardoamaro, catch, wouter.adem, marcvangend, alexpott: Move module config exclusion from config_environment to core.services

Issue #3039026 by kim.pepper, Berdir, Peter Majmesku, vadim.hirbu, YurkinPark, andypost, dww, claudiu.cristea, alexpott, jibran, dawehner, mikelutz: Deprecate file_directory_temp() and move to FileSystem service

Issue #3035312 by kim.pepper, andypost, martin107, yogeshmpawar, naveenvalecha, pguillard, Berdir, dww, claudiu.cristea, jibran, Mile23: Move file_scan_directory() to file_system service

Issue #2980712 by bircher, alexpott, yogeshmpawar, mpotter, borisson_: Define config directory in settings

Issue #3024728 by amateescu, plach: Preserve the backup tables after an entity type schema conversion process

Issue #3030501 by alexpott, Gábor Hojtsy, Berdir: [Symfony 4] Drupal\Core\StackMiddleware\ReverseProxyMiddleware calls Symfony\Component\HttpFoundation\Request::setTrustedHeaderName() which does not exist

Issue #2975328 by alexpott, Gábor Hojtsy, borisson_: Install profile in settings.php and mismatch check makes re-installs of Drupal hard

Issue #2868078 by Manuel Garcia, claudiu.cristea, benjifisher, faline, gigiabba, ankitjain28may, mohit1604: Use new array syntax in PHP files outside of /core

Issue #2921706 by Daniel Korte, bkosborne: Update example.settings.local.php to include ['cache']['bins']['page']

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

Issue #2805449 by joelpittet: Comment out 'extension_discovery_scan_tests' in example.settings.local.php

Issue #1286154 by mcdruid, cosmicdreams, das-peter, Cameron Tod, heddn, xjm, catch, tstoeckler, David_Rothstein, anavarre, tim.plunkett, naveenvalecha, dawehner: Allow custom default form cache expiration/lifetime

Issue #2662646 by chera.jaswinder, philnguyen, Munavijayalakshmi, daften, fago, memtkmcc, colan, benjifisher, cilefen, britter, dagmar, tomogden, catch, robertloo, xjm, osopolar, wesleydv, YesCT, jhodgdon, xlin, dhopki12: Add the temporary files directory config to the example config overrides in default.settings.php

Issue #2248983 by hchonov, amateescu, paranojik, timmillwood, tstoeckler, catch, Berdir, alexpott: Define the revision metadata base fields in the entity annotation in order for the storage to create them only in the revision table

Issue #2156401 by alexpott, moshe weitzman, tedbow, dawehner, greg.1.anderson, phenaproxima, chris.smith, heddn, balsama, xjm, Mile23, izus, Manuel Garcia, sun, pwolanin, Berdir: Write install_profile value to configuration and only to settings.php if it is writeable

Issue #2625212 by faline, cilefen, okay19, krishnan.n, snehi, tstoeckler, kostyashupenko, dawehner, alexpott, Wim Leers, cs_shadow: [rollback] Add ConfigSchemaChecker to development.services.yml

Revert "Issue #2156401 by alexpott, moshe weitzman, tedbow, dawehner, greg.1.anderson, phenaproxima, chris.smith, heddn, balsama, xjm, Mile23, izus, Manuel Garcia, sun, pwolanin, Berdir: Write install_profile value to configuration and only to settings.php if it is writeable"

This reverts commit 480eb82c.

Issue #2156401 by alexpott, moshe weitzman, tedbow, dawehner, greg.1.anderson, phenaproxima, chris.smith, heddn, balsama, xjm, Mile23, izus, Manuel Garcia, sun, pwolanin, Berdir: Write install_profile value to configuration and only to settings.php if it is writeable

Issue #2680379 by hchonov, mkalkbrenner, cilefen: services.yml and settings.local.php are not included if settings.php is a symlink

Issue #2625212 by faline, cilefen, okay19, krishnan.n, snehi, kostyashupenko, tstoeckler, dawehner, alexpott, Wim Leers, cs_shadow: Add ConfigSchemaChecker to development.services.yml

Issue #2827047 by faline, tstoeckler: Add http.response.debug_cacheability_headers: true to development.services.yml