Issue #2011128 by jsbalsera, aboros, Devin Carlson, mr.baileys, pplantinga: Theme_disable() can disable the wrong theme.

Issue #1770902 by sun, InternetDevels, mbrett5062, tim.plunkett: Theme of parent site executing test leaks into all tests.

Issue #2180109 by damiankloip, dawehner, ParisLiakos, joelpittet, MartijnBraam, Xano: Change the current_user service to a proxy.

Issue #2227355 by sun: InstallerServiceProvider does not override all cache bins to use memory backend.

Issue #2120235 by dawehner, YesCT: Regression: routing / tabs / actions / contextual links lack way to attach replacement arguments to UI strings.

Issue #2153469 by Garrett Albright, olli, swentel, webchick: View page display getting re-ordered on import, leading config system to believe it hasn't been imported yet.

Issue #1957312 by ParisLiakos, peximo, Désiré: Use the entity storage controller in aggregator module.

Issue #2159369 by ParisLiakos: Move aggregator_refresh() and most of ->removeItems() logic to a service.

Issue #2122175 by dclavain, SiliconMind, tim.plunkett, YesCT: String translation does not honor language fallback.

Issue #2075475 by sqndr, Oostie, meladawy, temaruk, LewisNyman: Theme with no screenshot causes CSS height issue.

Issue #2056879 by martin107, Outi, ioskevich, Cottser: Improve twig_* vars DOCs in settings.php and make Twig debug markup require a cache clear.

Issue #2225649 by jjcarrion, LewisNyman: Action links on /admin/config/services/aggregator are inside of an <em> tag.

Issue #2226185 by galooph, filijonka, Cottser: Remove @ingroup themeable from core theme Twig template docblocks.

Issue #2219617 by visabhishek, galooph, joshtaylor, Cottser: Remove @ingroup themeable from preprocess function docblocks.

Issue #2090525 by batigolix, ellishettinga, visabhishek, lostkangaroo, rak2008: Update hook_help for menu module.

Issue #2224691 by Sweetchuck: JavaScript Drupal.t and Drupal.formatPlural only works for non-english languages.

Issue #2225333 by Boobaa: LogicException in Drupal\hal\Normalizer\FieldItemNormalizer does not exist.

Issue #2111887 by Gábor Hojtsy, kfritsche, vasi1186, dclavain, YesCT, segi: Regression: Only title (of base fields) on nodes is marked as translatable.

Issue #2201693 followup by plopesc, Sweetchuck, rodrigoaguilera: Field output supporting code should move out of field.module.

Issue #2115391 by jhodgdon, lokapujya, zaporylie, BrightBold: Numbers are displayed in search results list.

Issue #2225677 by Eli-T, mcjim: Fix naming in ResponsiveImageMappingEntityTest following module rename from Picture to Responsive Image.

Issue #2108813 by cilefen, mtift, Désiré, xjm, InternetDevels: Add fancier config import/export test scenario.

This reverts commit 2cf87103.