Issue #1831798 by darol100, pjonckiere, rhuffstedtler, ifrik, paul.linney, rajneeshb, batigolix, jhodgdon: Update hook_help() for config manager module

Issue #2509300 by dawehner, catch, larowlan: Path alias UI allows node/1 and /node/1 as system path then fatals

Issue #1392754 by tss, justAChris, jhodgdon: Comply with new documentation standards for @file for namespaced class files

Issue #2511472 by Wim Leers, Fabianx, dawehner: Refactor all usages of drupal_render()/Renderer::render() that break #2450993

Issue #2203779 by ivanstegic, pguillard, Xano, Prashant.c, jhodgdon: Improve wording of the configuration import form

This reverts commit 37001445.

Issue #2392293 by bircher, tim.plunkett, alexpott, cilefen, gobinathm: Refactor hook_system_info_alter implementations to use ModuleUninstallValidatorInterface

Issue #2383871 by mgifford, rpayanm, a_thakur, maximpodorov, AohRveTPV, jhodgdon: Spellchecking Drupal - PHP

Issue #2491155 by mikeburrelljr, Mac_Weber, opdavies: Update drupal.org and kernel.org URLs in core modules (Follow-up to 2489912)

Issue #2486475 by Eli-T, alexpott, xjm: Notifying user of config changes when config has never been synched still makes no sense

Issue #2361423 by alexpott, larowlan, dixon_, swentel: Add a step to config import to allow contrib to create content based on config dependencies

Issue #2416109 by alexpott, bircher, xjm, dawehner: Validate configuration dependencies before importing configuration

Issue #2472323 by dawehner, neclimdul, Crell, kim.pepper, nod_, Wim Leers, larowlan, jibran, pwolanin, catch: Move modal / dialog to query parameters

Issue #1081266 by stefan.r, mikeytown2, jeroen.b, tsphethean, mfb, joseph.olstad, marcelovani: Avoid re-scanning module directory when a filename or a module is missing

Issue #2432791 by alexpott, vijaycs85, tim.plunkett, joshtaylor, Fabianx, Berdir, yched, bojanz: Skip Config::save schema validation of config data for trusted data.

Issue #2030637 by yched, Mile23, daffie, Alumei, tidrif, chertzog, Berdir, swentel, ofry: Expand FieldConfig/BaseFieldOverride/FieldConfigBase with methods

Issue #2472669 by keopx, rpayanm, rteijeiro, jhodgdon: Complete documentation for every implementation of hook_ENTITY_TYPE_*

Issue #2457551 by Gábor Hojtsy, rteijeiro, keopx, eiriksm, alexpott: Regression: optional default configuration is not translatable anymore in locale

Issue #2079427 by Berdir, andypost, yched: Core/Entity depends on classes / functions from field.module

Issue #2460847 by alexpott: Allow optional configuration to be installed when its dependencies are met

Issue #2459971 by Gábor Hojtsy: The langcode key on configuration files is not explicit in configuration schema

Issue #2457887 by prateekMehta, stefan.r, rpayanm, alexpott: Use Utility\SafeMarkup class instead of Utility\String for placeholder(), checkPlain(),format() functions

Issue #2212069 by Gábor Hojtsy, pjonckiere, rteijeiro, cilefen: Non-English Drupal sites get default configuration in English, edited in English, originals not actually used if translated

Issue #2451665 by dawehner: Don't rebuild the route on ModuleInstaller::install() (30% installer speedup)

Revert "Revert "Issue #2457653 by Gábor Hojtsy: System.site langcode is both used as a file language code and a site language code""

This reverts commit 079a52b4.

Revert "Issue #2457653 by Gábor Hojtsy: System.site langcode is both used as a file language code and a site language code"

This reverts commit 364a6e9c.