Issue #2936793 by tim.plunkett, tstoeckler, EclipseGc: EntityReferenceItem::generateSampleValue() should create a sample entity if a referenceable entity is not found

(cherry picked from commit f724db34)

Issue #2858482 by Wim Leers, dawehner, benjy, larowlan, tedbow, borisson_: Simplify REST routing: disallow requesting POST/PATCH in any format, make consistent

(cherry picked from commit b4a02309)

Issue #2936435 by Berdir, alexpott: Better BC for deprecated container parameter user.tempstore.expire

(cherry picked from commit 0325ab60)

Issue #2575135 by quietone, ckaotik, olegel, mikeryan, larowlan: Dummy map/message tables being created

Issue #2671964 by EclipseGc, tim.plunkett, Jo Fitzgerald, larowlan, fago, dawehner, Berdir, phenaproxima: ContextHandler cannot validate constraints

Issue #2876085 by heddn, maxocub, phenaproxima, Jo Fitzgerald, vasi, quietone, yoroy, masipila, larowlan, neclimdul, krystalcode, catch: Before upgrading, audit for potential ID conflicts

Issue #2870465 by naveenvalecha, vaplas, Lendude, Jo Fitzgerald, michielnugter, Gábor Hojtsy: Convert web tests to browser tests for user module

Issue #2765959 by davidwbarratt, Wim Leers, dawehner, borisson_, tstoeckler, tedbow, catch: Make 4xx REST responses cacheable by (Dynamic) Page Cache + comprehensive cacheability test coverage

Issue #1472946 by gnuget, andypost, mmrares, sidharthap, kiamlaluno, Himanshu5050, dineshkumares, amit.drupal: Remove usages of deprecated function drupal_realpath() throughout core functions

Issue #2572795 by mfernea, zaporylie, pfrenssen, andypost, attiks, alexpott, xjm, Mile23, catch, borisson_: Fix coding standard for closures - Drupal.WhiteSpace.ScopeClosingBrace and Generic.Functions.OpeningFunctionBraceKernighanRitchie

Issue #2901562 by mfernea, Jo Fitzgerald, Yogesh Pawar, 3ssom, Mile23, borisson_: Fix 'Squiz.WhiteSpace.SuperfluousWhitespace' coding standard

Revert "Issue #2572795 by mfernea, pfrenssen, attiks, andypost, alexpott, xjm, Mile23, catch, borisson_: Fix coding standard for closures - Drupal.WhiteSpace.ScopeClosingBrace and Generic.Functions.OpeningFunctionBraceKernighanRitchie"

This reverts commit c422bdfa.

Issue #2572795 by mfernea, pfrenssen, attiks, andypost, alexpott, xjm, Mile23, catch, borisson_: Fix coding standard for closures - Drupal.WhiteSpace.ScopeClosingBrace and Generic.Functions.OpeningFunctionBraceKernighanRitchie

Issue #2917883 by quietone, TR, Jo Fitzgerald, masipila, phenaproxima: Rename 'migration_templates' directories in core modules to 'migrations'

Issue #2892821 by tedbow, zaporylie, alexpott, Wim Leers, dagmar, yoroy, effulgentsia, Bojhan: Core modules check node module's "access content" permission for displaying things that have nothing to do with nodes

Issue #2572787 by alexpott, mfernea, attiks, andriyun, andypost, RoSk0, hussainweb, klausi, martin107: Fix 'Drupal.WhiteSpace.CloseBracketSpacing' coding standard

Issue #2901572 by Jo Fitzgerald, bluccas, mfernea, klausi: Fix 'Drupal.Commenting.PostStatementComment' coding standard

Issue #2873696 by nvexler, wengerk, gido, Jo Fitzgerald, xjm: Add @internal to core classes, methods, properties to Form Classes

Issue #2909368 by mfernea, reflie, zaporylie: Fix 'Drupal.Commenting.VariableComment.InlineVariableName' coding standard

Issue #2572699 by rajeshwari10, andriyun, mfernea, pashupathi nath gajawada, marvin_B8, attiks, andypost, alexpott: Fix 'Drupal.ControlStructures.InlineControlStructure' coding standard

Issue #2901726 by mfernea, gmario, finn.lewis, robertoperuzzo, rachel_norfolk: Fix 'Squiz.Functions.MultiLineFunctionDeclaration' coding standard

Issue #2846614 by damiankloip, dawehner, claudiu.cristea, effulgentsia, tstoeckler, gaurav.kapoor, Berdir, Jo Fitzgerald, Wim Leers, jibran: Incorrect field name is used in views integration for multi-value base fields

Issue #2873768 by dhopki12, WidgetsBurritos, harsha012, Mile23, catch: Add Change record to @deprecated for *.modules constants

Issue #2853872 by heddn, maxocub, masipila, phenaproxima, quietone, andypost, larowlan: Migration for forum and article comments: duplicate comment types and incorrect comment_entity_statistics

Issue #2715485 by harsha012, mfernea, malavya, himanshu-dixit, vprocessor, tameeshb, Mile23, RajeevK, Jo Fitzgerald, tiago.urbano, xjm, klausi: Fix 'Drupal.Commenting.InlineComment.NoSpaceBefore' coding standard

Issue #2782833 by Mile23, martin107, larowlan, effulgentsia: Remove usages of deprecated EntityManager from Entity class

Issue #2572791 by Mile23, andriyun, attiks, RoSk0: Fix 'Drupal.WhiteSpace.OpenBracketSpacing' coding standard

Issue #2905527 by EclipseGc, amateescu, tim.plunkett, larowlan: Introduce a sample value entity method to ease plugin filtering via context

Revert "Revert "Revert "Issue #2715485 by harsha012, malavya, himanshu-dixit, mfernea, vprocessor, tameeshb, Mile23, Jo Fitzgerald, klausi, xjm: Fix 'Drupal.Commenting.InlineComment.NoSpaceBefore' coding standard"""

This reverts commit b0675761.

Revert "Revert "Issue #2715485 by harsha012, malavya, himanshu-dixit, mfernea, vprocessor, tameeshb, Mile23, Jo Fitzgerald, klausi, xjm: Fix 'Drupal.Commenting.InlineComment.NoSpaceBefore' coding standard""

This reverts commit 964954e1.

Revert "Issue #2715485 by harsha012, malavya, himanshu-dixit, mfernea, vprocessor, tameeshb, Mile23, Jo Fitzgerald, klausi, xjm: Fix 'Drupal.Commenting.InlineComment.NoSpaceBefore' coding standard"

This reverts commit 2df73e2c.

Issue #2715485 by harsha012, malavya, himanshu-dixit, mfernea, vprocessor, tameeshb, Mile23, Jo Fitzgerald, klausi, xjm: Fix 'Drupal.Commenting.InlineComment.NoSpaceBefore' coding standard