Issue #2020361 by vijaycs85: Followup for: Create LanguageConfigContext to activate configuration overrides based on language.

Issue #1858616 by Berdir: Extract generic CacheCollector implementation and interface from CacheArray.

Issue #2013094 by pwieck, Cottser: Remove unnecessary template_preprocess() reference from all Twig files

Issue #2020361 by vijaycs85: Create LanguageConfigContext to activate configuration overrides based on language.

Issue #1668866 by ParisLiakos, aspilicious, tim.plunkett, pdrake, g.oechsler, dawehner, Berdir, corvus_ch, damiankloip, disasm, marcingy, neclimdul: Replace drupal_goto() with RedirectResponse.

Issue #2021749 by Sutharsan: Fixed Core should not force latest version number translations on sites.

Issue #2018409 by ParisLiakos: LocaleTranslation should have its translation property initialized as array.

Issue #1363112 by mparker17, mgifford, tlattimore, Jacine, dcmouyard, bowersox, ry5n, ahdiaz: Simplify names of 'element-x' helper classes.

Issue #2011102 by kgoel, DmitryDrozdik: Replace drupal_container() with Drupal::service() in the locale module.

Issue #1898428 by joelpittet, shanethehat, Floydm, gillbates, steinmb, artis, Cottser, gnuget: locale.module - Convert theme_ functions to Twig.

Issue #1895160 by tim.plunkett: Convert admin/content to a View, keep a non-views fallback with no bulk operations.

Issue #1813762 by ParisLiakos, Jose Reyero, YesCT, japicoder, attiks: Introduce unified interfaces, use dependency injection for interface translation.

Issue #1987066 by Kevin Morse, JohnAlbin, rteijeiro, echoz, ry5n: Rename files to match CSS file naming convention.

Issue #1818570 by Berdir, effulgentsia, das-peter, andypost: Convert users to the new Entity Field API.

Issue #1888424 by katbailey, steveoliver, twistor, beejeebus, effulgentsia: Change notice: Make Drupal's URL generation logic available to HttpKernel, and minimize code repetition/divergence.

Issue #1957154 by joates, ayelet_Cr, xjm | Berdir: Replace calls to drupal_container()->get('module_handler()') service with Drupal::moduleHandler().

This reverts commit c4e52bb6.

Issue #1498674 by plach, das-peter, Schnitzel, dawehner, YesCT, attiks, Berdir, Gábor Hojtsy, Soul88, Carsten Müller: Refactor node properties to multilingual.

Issue #1620010 by dawehner, ParisLiakos, plach, jibran: Move LANGUAGE constants to the Language class.

Issue #1898432 by WebDevDude, steveoliver, vlad.dancer, jenlampton, pixelmord, Fabianx, iztok, EVIIILJ, jwilson3, c4rl, Cottser: Convert node module to Twig.

Issue #1827448 by RobLoach, sun, jbrown, tstoeckler: Use __DIR__ instead of DRUPAL_ROOT where possible/sensible.

Issue #1905152 by Gábor Hojtsy, Jose Reyero, vijaycs85, YesCT, penyaskito: Integrate config schema with locale, so shipped configuration is translated.

Issue #625958 by slashrsm, quicksketch, eojthebrave, droplet, danlinn, czigor: Support Uploading Multiple Files for HTML5 Browsers via #multiple attribute.

Issue #1875614 by Sutharsan, YesCT, Berdir:  Convert drupal_http_request() usage in locale.batch.inc to Guzzle.

Issue #1934964 by alexpott, Gábor Hojtsy, nevergone: Fixed Locale override subscriber should re-init context to clear caches.

Issue #1818556 by das-peter, plach, fago, Berdir, vijaycs85: Change notice: Convert nodes to the new Entity Field API.