(cherry picked from commit 671200881f95bb8b82572aeafc4428e7d9ec5e30)

Issue #2603818 by jhodgdon, beejeebus, blackra: Add defgroups for listing page headers for api.drupal.org

Issue #2616498 by neclimdul, dawehner, Mixologic: Drupal\Core\Routing\RouteProvider::getCandidateOutlines() does an illegal shift when config is empty

(cherry picked from commit d9a92c36)

Issue #2625216 by alexpott: LocaleConfigManager::getTranslatableDefaultConfig() reads config from uninstalled modules

(cherry picked from commit 3693ba75)

Issue #2621782 by amateescu: SQL::addWhere not defaulting to "IN" operator when using EntityReferenceView for multiple values

(cherry picked from commit 7e80e5b8)

Issue #2572695 by marvin_B8, attiks, pfrenssen, xjm: Fix 'Drupal.ControlStructures.ElseIf' coding standard

(cherry picked from commit f730e579)

This reverts commit 7dbb74b8.

Revert "Issue #2623232 by xjm, plach, benjy, penyaskito: Improve messages when entity/field mismatch happens"

This reverts commit 796fe6bc.

Revert "Issue #2571521 by Maouna, dawehner, sdstyles: Make the logger available on the controllerBase"

This reverts commit 63803570.

Revert "Issue #2503981 by eiriksm: Move checkEmptyRegions to named function and before first use (block.js)"

This reverts commit 1426e33f.

(cherry picked from commit 5ad57974)

Issue #2623232 by xjm, plach, benjy, penyaskito: Improve messages when entity/field mismatch happens

Issue #2618040 by Maouna, plach, catch, YesCT, steelsector, matsbla, SiliconMind, vodde83: Configuration of configurable language types reset after module install

(cherry picked from commit 043fb238)

Issue #2623680 by alexpott, pfrenssen: Fix phpcs.xml.dist to work with the latest rules and not have unnecessary lines

(cherry picked from commit 8b1db195)

Issue #2604038 by heykarthikwithu: Views module's "base.js" function "Drupal.Views.parseViewArgs", Local variable 'args' is redundant

(cherry picked from commit a4f5b2db)

(cherry picked from commit 8e5f58b8a58081bd0edb7f3c8ebe2cf018332f44)

(cherry picked from commit 851ae1d3)

Issue #2075889 by kgoel, pwolanin, catch, YesCT, dawehner, mpdonadio, johnshortess, Crell, mradcliffe, alexpott, webchick, ohthehugemanatee: Document that Drupal will handle incoming paths in a consistent and case-insensitive fashion for routing

(cherry picked from commit f8bd8143)

(cherry picked from commit dfae3939)

Issue #2610236 by cilefen, aerozeppelin: Views - "No Results Behavior" for individual fields escapes HTML

Issue #2547639 by dcrocks, mgifford, Pravin Ajaaz, Gábor Hojtsy, Wim Leers: Rename ambiguous "Menu" toggle in Bartik for accessibility

(cherry picked from commit 974e3402)

Issue #2122087 by rakesh.gectcr, snehi, InternetDevels, Xano, alvar0hurtad0: Remove references to hook_init()

(cherry picked from commit e18279a0)

(cherry picked from commit 702137d9)

Issue #2581399 by YesCT, effulgentsia: views.style.table schema has incorrect label for 'description'

(cherry picked from commit 5e3847db)

Issue #2579695 by willzyx: ViewsMenuLink should use parent contructor instead of set manually the member variables

(cherry picked from commit 8aead032)

(cherry picked from commit fa7a89af)

(cherry picked from commit b3e880e6855fa4fd1cf2997c671a0a20b5fa57d5)

Issue #2554911 by penyaskito, benjy, catch, ifrik, plach, Bojhan, Gábor Hojtsy, yoroy: Inform users/developers about entity/field mismatch details if it happens

(cherry picked from commit 91980774)

(cherry picked from commit df64790a)