Issue #1978926 by likin, YesCT, Pancho, kim.pepper, h3rj4n, tim.plunkett, disasm, Luxian, neetu morwani | vijaycs85: Convert locale_translation_status_form to a Controller.

Issue #2300829 by Jose Reyero: Fixed Clean up LocaleConfigManager / TypedConfigManager features and cache duplications.

Issue #697760 by sun: Replace getInfo() in tests with native phpDoc + annotations (following PHPUnit).

Issue #2271485 by amitgoyal, Juanmamr | YesCT: Fixed Move LocaleStringTest $only_translated = array('untranslated' => FALSE); out of accidental comment.

Issue #2286403 by martin107: Inconsistent use of magic number when constants DIRECTION_LTR and DIRECTION_RTL already defined.

Issue #2216541 by jhodgdon, Gábor Hojtsy: Fill in topic/@defgroup docs for Internationalization overview.

Issue #2124957 by Wim Leers, catch: Replace 'content' cache tag with 'rendered' and use it sparingly.

Issue #1906810 by dawehner, damiankloip, tstoeckler, kgoel, fubhy, jrglasgow, xjm, Gaelan, socketwench: Require type hints for automatic entity upcasting.

Revert "Issue #1906810 by dawehner, damiankloip, tstoeckler, kgoel, fubhy, jrglasgow, xjm, Gaelan, socketwench: Require type hints for automatic entity upcasting."

This reverts commit c9e73f7d.

Issue #1906810 by dawehner, damiankloip, tstoeckler, kgoel, fubhy, jrglasgow, xjm, Gaelan, socketwench: Require type hints for automatic entity upcasting.

Issue #2246665 by jaredsmith, martin107, YesCT, filijonka, tstoeckler: Typehint with Drupal\Core\Language\LanguageInterface instead Drupal\Core\Language\Language.

Issue #2004252 by mortendk, babruix, dasjo, joelpittet, visabhishek, cwells, jenlampton, Dragan Eror, nikhiltri, minneapolisdan, Manuel Garcia, sarahjean, acouch | scor: Node.html.twig template.

Issue #2244447 by alexpott, sun, Berdir: Translation of low-level info/annotations leads to circular dependencies.

Issue #2224887 by alexpott, Berdir, Gábor Hojtsy, Jalandhar: Language configuration overrides should have their own storage.

Issue #2254495 by sun, ParisLiakos, alexpott: Followup to Move language_admin_predefined_list to ConfigurableLanguageManager.

Issue #2263255 by alexpott: Cache.config only has a single key in it for config schema this seems a waste.

Issue #2183113 by jhodgdon, effulgentsia, tim.plunkett, herom, larowlan: Update hook_help signature to use route_name instead of path.

Issue #2254495 by ParisLiakos, alexpott: Move language_admin_predefined_list to ConfigurableLanguageManager.

Issue #2240463 by robertdbailey, balagan, holly.ross.drupal: Fix text: languages are not "enabled/disabled" anymore, they are added/removed.

Issue #1978918 by likin, Luxian, vijaycs85, Pancho, disasm: Convert locale_translate_import_form to a Controller.

Issue #2239065 by tim.plunkett | webchick: Overridden config bleeding through to configuration forms.

Issue #2208609 by sun, Jalandhar, damiankloip: Move Json utility class into Drupal\Component\Serialization.