Issue #2105583 by neclimdul, tim.plunkett, dawehner, Mile23: Add some sane strictness to phpunit tests to catch risky tests

(cherry picked from commit 136b1d45)

Issue #2623790 by roderik, priya.chat, stefan.r: Update SessionManager::migrateStoredSession() method comment

(cherry picked from commit 820b2f53)

(cherry picked from commit c26981d8)

(cherry picked from commit 09c51315)

Issue #2606344 by rakesh.gectcr, aneeshthankachan, dawehner, cilefen: Wrong @param doc for construct function in class CoreServiceProvider

(cherry picked from commit 74493510)

Issue #2604018 by heykarthikwithu, snehi, kaushalkishorejaiswal, pjonckiere: Add @param documentation in __construct() of User module

(cherry picked from commit cbe1e395)

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

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

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

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

Issue #2443709 by Xano, mikeryan, benjy: Some plugin annotations contains legacy "derivative" property

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

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

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

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

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

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

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

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

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

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