Issue #2080823 by alexpott, swentel, Wim Leers: Create API to discover content or config entities' soft dependencies and use this to present a confirm form on module uninstall.

Issue #2098119 by beejeebus, alexpott, chx: Replace config context system with baked-in locale support and single-event based overrides.

Issue #2031175 by Sutharsan, penyaskito, vijaycs85, Berdir: Translation imports take a lot of time in tests even when not needed.

Issue #1255696 by dagmar, lslinnet, swentel, jenlampton, sun: Move field type modules into separate 'Field type' package.

Issue #2098089 by penyaskito, Schnitzel, tim.plunkett, YesCT, EllaTheHarpy, Gábor Hojtsy: Fixed Date formats cannot be translated (the core UIs are useless).

Issue #2099541 by stefan.r, Schnitzel, Gábor Hojtsy: Fixed ConfigEntities should not load the Entity translated on Edit Forms.

Issue #2080655 by chertzog: Remove Unused local variable  from /core/modules/locale/lib/Drupal/locale/Tests/LocaleConfigTranslationTest.php.

Issue #2094797 by dawehner, Gábor Hojtsy, webflo: Fixed Config entities upcast from the request always get default language context.

Issue #1199946 by alexpott, fubhy, bojanz, steinmb, chx, catch: Fixed Disabled modules are broken beyond repair so the 'disable' functionality needs to be removed.

Issue #2074037 by Wim Leers, effulgentsia: Add drupalPostUrl() — drupalPost()/drupalPostAjax() are for forms only, D8 JS performs non-form HTTP requests.

Issue #1978916 by likin, YesCT, disasm, ayelet_Cr, tim.plunkett, vijaycs85, Letharion: Convert locale_translate_page() to a Controller.

Issue #1754246 by webflo, swentel, penyaskito, andypost, alexpott, YesCT, dagmar: Languages should be configuration entities.

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

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

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