Issue #2210631 by damiankloip: Move PhpStorageFactory to the Core namespace.
Issue #2226853 by filijonka, acouch: Variables documented in item-list.html.twig are incorrect.
Issue #2160365 by plopesc, vijaycs85: Date field required marker rendered as "Array".
Issue #2223631 by znerol: Use request stack in database flood backend.
Issue #2208325 by mcjim, anksy: Incorrect error message when changing the outline of a book page.
Issue #2203065 by lokapujya, cwells: Adjust assertFormatterRdfa() parameters to allow for more advanced testing.
Issue #2227973 by pfrenssen, Berdir: Rename ContentTranslationController to ContentTranslationHandler.
Issue #2230921 by nod_: Regression: 'Back to site' button forgets last non-admin page after visiting 'block region demo'.
Issue #2233887 by benjy: Alias Destination is broken.
Issue #2232391 by alexpott: Revert drupal 8 changes made to generate-d7-content.sh and  generate-d6-content.sh.
Issue #2232385 by Wim Leers: Cacheable 'Syndicate' block: never cache it, because it's cheaper to always render it.
Issue #2226665 by swentel, Wim Leers: Only set 'add more' wrapper on fields with cardinality >1.
Issue #2228627 by tim.plunkett: Core/tests/Drupal/Tests/Component/Utility/UrlHelperTest.php is actually UrlTest.
Issue #2225539 by znerol: Use request stack in admin context service.
Issue #2228941 by larowlan, andrei.dincu | Cottser: PHP notice displayed for forum blocks when there are no forum topics.
Issue #2089433 by ianthomas_uk, grom358, herom, thedavidmeister, visabhishek, longwave, Sweetchuck: Remove uses of deprecated XSS filter functions.
Revert "Issue #2160365 by plopesc, vijaycs85: Date field required marker rendered as "Array"."

Broke HEAD.

This reverts commit 0f0edea2a3e20b3f91047fde55530158b31575d6.
Issue #2233929 by alexpott: Drupal_set_time_limit should only be able to increase the time limit.
Issue #2165725 by Xano: Introduce hook_entity_operation().
Issue #2233029 by benjy: Add a Book destination to the Migrate API.