Issue #2103039 by fran seva, rodrigoaguilera, Gábor Hojtsy, ifrik, batigolix, bendev: Update hook_help for language module

Issue #2183231 by tstoeckler, plach, jessebeach, fago, Berdir, xjm, mauzeh: Make ContentEntityDatabaseStorage generate static database schemas for content entities.

Issue #2007248 by larowlan, tim.plunkett, xjm, Wim Leers: Fixed When CKEditor module is uninstalled, the right text editor config entities are affected but their labels are missing.

Issue #2272161 by tim.plunkett, fago: Entity-based conditions should use type => entity: instead of constraints.

Issue #2271967 by Jose Reyero, alexpott, amitgoyal: Fixed and use TypedConfigManagerInterface/TypedConfigManager.

Issue #2273489 by olli: Fixed Random test failure 'Created time is correct.' in GenericCacheBackendUnitTestBase/ApcuBackendUnitTest.

Issue #2181511 by amateescu, xjm, Berdir | yched: Throw an exception when creating an EntityDisplay for a non-ContentEntity.

Issue #1912536 by vollepeer, derheap | taslett: Remove all references to the (removed) user-picture.html.twig file.

Issue #2096699 by vijaycs85 | tstoeckler: Fixed Missing config schema for language.negotiation.selected_langcode.

Issue #2251719 by sergeypavlenko, YesCT, chx, Pancho: Fixed Completely remove DRUPAL_MAXIMUM_TEMP_FILE_AGE.

Issue #2253735 by larowlan, olli, xjm: Fixed WSOD on custom block creation / listing if config translation enabled.

Issue #2267411 by David_Rothstein | klausi: Document that field_access() does no entity access checks.

Issue #2236781 by damiankloip, alexpott, xjm: Fixed ViewsData only writes one per-table cache entry per request.

Issue #1959660 by larowlan, pfrenssen, xjm, clemens.tolboom, dawehner, RobLoach: Replace xpath() with WebTestBase::cssSelect() by leveraging Symfony CssSelector.

Issue #2209293 by sun, xjm: Remove core compatibility check in ExtensionDiscovery; obsolete with Migrate in core.