Issue #1867030 by larowlan, Berdir, Oleksiy, andypost, fil00dl: Contact message preview appears at random form position after sorting fields in Manage fields

(cherry picked from commit 57fdb946)

Issue #2814141 by tbonomelli, Berdir, Ginovski, tduong: Auto-reply mail attempts to send a mail to an empty e-mail if the e-mail field is not shown

(cherry picked from commit aae29691)

(cherry picked from commit fa27b840d617abe77f3b03359909195a6fb8ce8c)

Issue #2807879 by peaton, phenaproxima, alexpott: Convert Contact's Migrate source tests to new base class

(cherry picked from commit 515a55e7)

(cherry picked from commit f39d8fb9)

Issue #2459289 by Lendude, dhrjgpt2005, kalistos, dawehner, david_garcia: Boolean default values are not saved

(cherry picked from commit 6c614cbf)

Issue #2572801 by alexpott, vprocessor, andriyun, andypost, chishah92, Mile23, attiks, hussainweb, klausi, dawehner, pfrenssen: Fix 'Drupal.WhiteSpace.ScopeIndent' coding standard

Issue #306662 by naveenvalecha, andypost, larowlan, tim-e, mr.baileys, pguillard, alexpott, hussainweb, frankcarey, Tor Arne Thune, deepakaryan1988, jibran, tstoeckler: Add redirect option to site-wide contact forms

Issue #2427637 by Mile23, keopx, naveenvalecha, marvin_B8: Remove usages of deprecated entity_get_bundles()

Revert "Issue #2560795 by mikeryan, phenaproxima, penyaskito, willwh, benjy: Source plugins have a hidden dependency on migrate_drupal"

This reverts commit 89815ba3.

Issue #2560795 by mikeryan, phenaproxima, penyaskito, willwh, benjy: Source plugins have a hidden dependency on migrate_drupal

Issue #2513402 by pixelmord, cilefen, prajaankit, jcnventura, webchick, nicrodgers, Bojhan, g.oechsler, xjm, ifrik, Wim Leers: Any time a user creates a thing and saves, display a link to the thing created in the status

Issue #2737607 by generalredneck: Migration Source Plugins are not extendable because of ambiguous database field names

This reverts commit 36a23b3c.

Issue #2707255 by timmillwood, dawehner, amateescu, Berdir: All content entities should inherit baseFieldDefinitions

Issue #2719695 by alexpott, Mile23: Fix 'Drupal.Classes.ClassDeclaration.CloseBraceAfterBody' coding standard

Issue #2572777 by andypost, alexpott, attiks, andriyun: Fix 'Squiz.Strings.ConcatenationSpacing' coding standard

Issue #2572693 by Mile23, andriyun, andypost, attiks: Fix 'Drupal.ControlStructures.ControlSignature' coding standard

Issue #2572307 by vprocessor, attiks, andriyun, alexpott, pfrenssen: Fix 'Generic.PHP.UpperCaseConstant' coding standard

Issue #2697909 by pguillard, himanshugautam, snehi, aburrows, jhodgdon: Fix "login (noun/adjective)" vs. "log in (verb)" in comments (and logout/log out)

Issue #2665992 by alexpott, klausi, heykarthikwithu, xjm, tstoeckler: @file is not required for classes, interfaces and traits

Issue #2686765 by sidharthap, thhafner: cacheUntilEntityChanges() is deprecated and should be replaced with addCacheableDependency()

Issue #2625696 by chx, benjy, alexpott, catch, mikeryan, andypost, phenaproxima: Make migrations themselves plugins instead of config entities

Revert "Issue #2625696 by chx, alexpott, benjy, mikeryan, andypost, phenaproxima: Make migrations themselves plugins instead of config entities"

This reverts commit 694994fe.

Issue #2625696 by chx, alexpott, benjy, mikeryan, andypost, phenaproxima: Make migrations themselves plugins instead of config entities

Issue #2641584 by Mac_Weber, heykarthikwithu, legovaer: Replace deprecated usage of  entity_create('field_config') with a direct call to FieldConfig::create()

Issue #2641520 by Mac_Weber, rakesh.gectcr, darkdim: Replace deprecated usage of  entity_create('contact_form') with a direct call to ContactForm::create()

Issue #2641586 by Mac_Weber, marvin_B8: Replace deprecated usage of  entity_create('field_storage_config') with a direct call to  FieldStorageConfig::create()

Issue #2662990 by alexpott: Flood's database backend is a core service but it depends on system install

Issue #2501909 by pguillard, pjbaert, shwetaneelsharma, jhodgdon, ifrik: Update the UI texts for the Contact module

(cherry picked from commit e0516e39)