Issue #2489606 by 20th, slashrsm: hook_file_download() docblock refers to a non-existing function file_download()

(cherry picked from commit c732e506)

(cherry picked from commit 5c365690)

(cherry picked from commit 3900e343)

(cherry picked from commit 8872b0dd)

(cherry picked from commit 906ff36c)

(cherry picked from commit 7f81be33)

(cherry picked from commit aecacce5)

(cherry picked from commit ab8284be)

Issue #2838095 by cilefen, pjcdawkins: Only one site slogan character in site slogan when using PHP 7.1

(cherry picked from commit 8746bd3e)

Issue #2838968 by Ginovski, Berdir: BlockContentListBuilder should use RedirectDestinationTrait instead of hardcoding the collection link template

(cherry picked from commit 0f613741)

(cherry picked from commit fa4c50a8)

(cherry picked from commit b149b639)

Issue #2824827 by damiankloip, dawehner, Wim Leers, klausi: \Drupal\hal\Normalizer\ContentEntityNormalizer::denormalize() fails with fatal PHP error when bundles are missing from link relation types

(cherry picked from commit 35acba7a)

Issue #2794699 by Jo Fitzgerald, klausi, phenaproxima: MigrateMenuSettingsTest.php is not in the correct location

(cherry picked from commit e2d04183)

Issue #2828559 by tacituseu, alexpott, mpdonadio, amateescu, hchonov, catch, xjm, Wim Leers, Mixologic: UpdatePathTestBase tests randomly failing

(cherry picked from commit 528e3071)

Issue #2623568 by yanniboi, claudiu.cristea, himanshugautam, anil280988, sidharthap, Sagar Ramgade, dawehner, tstoeckler: Config schema of argument_default plugins is incorrect

Issue #2786443 by alexpott, Berdir, RKopacz, milos.kroulik, generalconsensus: \Drupal\field\FieldStorageConfigStorage::mapFromStorageRecords() can fail without a reasonable error

(cherry picked from commit bb55292a)

Issue #2838205 by 20th, panshulk, Damien Flament: Invalid YAML syntax in code examples in documentation

(cherry picked from commit 44a9491c)

Issue #2829484 by vegantriathlete, 20th, xjm: Incorrect spelling of possessive "its own" in multiple comments

(cherry picked from commit 1ac9846e)

(cherry picked from commit 6b7acf7d)

(cherry picked from commit 229d3816)

(cherry picked from commit d1eacac2)

This reverts commit 4cc325fa.

Revert "Issue #2836381 by phenaproxima, Wim Leers: Seven's entity-add-list template omits link attributes"

This reverts commit f5c79614.

(cherry picked from commit f01ac2d4)

Issue #2830485 by michielnugter, klausi, tedbow, xjm, catch, tim.plunkett, dawehner, alexpott, Wim Leers, Lendude: \Drupal\Tests\outside_in\FunctionalJavascript\OutsideInBlockFormTest fails randomly

(cherry picked from commit f53358d2)

Issue #2721725 by Vinay15, snehi, zerbash, er.pushpinderrana, jhodgdon, xjm, Ashish.Dalvi, joachim, Kevin Davison, ckrina: Select form element has undocumented properties

(cherry picked from commit c6344b06)

Issue #2651328 by aerozeppelin, GeduR: Views Handler Filter InOperator exposed fires illegal choice when all option has been selected

(cherry picked from commit 1f0a6298)

Issue #2823955 by Jo Fitzgerald, benjy, quietone, claudiu.cristea, mikeryan: No need to specify operator for Vocabulary filter in Term source

(cherry picked from commit 08febd9a)

Issue #2836434 by alexpott, oriol_e9g, NickWilde, bradjones1, AdamPS, carteriii, gapple, tstoeckler, soulsymphonies: We should not ever recommend APC in Drupal 8

(cherry picked from commit e313a51e)

Issue #2828542 by claudiu.cristea, pfrenssen, cebasqueira, heddn, alexpott: Properly check if a destination folder for a file exists

(cherry picked from commit fb17ddf0)

Issue #2822296 by shashikant_chauhan, jp.stacey, xjm: Wrong fully qualified class name  \Drupal\Core\Routing\LinkGeneratorInterface::generate() in docs of Drupal::l()

(cherry picked from commit 38959d63)

Revert "Issue #2828438 by Adita, Sam152, rachel_norfolk, timmillwood, jp.stacey: Exception when adding tab to a node managed by content moderation"

This reverts commit debf5fcc.

Issue #2828438 by Adita, Sam152, rachel_norfolk, timmillwood, jp.stacey: Exception when adding tab to a node managed by content moderation

(cherry picked from commit debf5fcc)

Issue #2548713 by yongt9412, larowlan, Berdir, swentel, subhojit777, effulgentsia: Only one additional new value saved unlimited field and no non-field values are restored after preview

(cherry picked from commit f403ccb9)

Issue #2781927 by pguillard, kiamlaluno, Eda, kiwimind: Improve description of render array properties and examples

(cherry picked from commit aa036603)