Issue #2475231 by jcnventura, mgifford, xjm: Content translation header in content type edit form is not styled correctly

Issue #2501183 by borisson_, dileepmaurya, Gábor Hojtsy, Berdir: LocaleLookup cache ID is using numeric indexes of the roles field, not role ID's

Issue #2532970 by Xano, tim.plunkett, jhodgdon: PluginFormInterface must document $form means the plugin's own elements

Issue #2535192 by chx, dawehner, jhodgdon: Security: LoggerChannelInterface doxygen needs a little love

Issue #2465751 by andypost, JeroenT, RavindraSingh, tim.plunkett, Berdir: Remove config_test_load() and replace with entity_load

Issue #2512062 by dsnopek, tim.plunkett, Wim Leers: VariantInterface extends ConfigurablePluginInterface so PageDisplayVariantSelectionEvent should allow passing configuration to the Variant (to enable Panels Everywhere)

Issue #2533768 by Wim Leers, lauriii: Add the user entity cache tag to user.* cache contexts that need it

Issue #2056089 by BarisW, TR, mgifford, rodvolpe, Dom., nambisolo, nod_, katewelling, Manjit.Singh, jhodgdon, Bojhan, Wim Leers: UI problems on the Modules/Extend page

Issue #2489830 by cilefen, davidhernandez, dcmul, Adam Clarey, joshi.rohit100, rpayanm, sqndr, Cottser, lauriii: Improve theme compatibility error message

Issue #2430397 by Wim Leers, Fabianx: When mapping cache contexts to cache keys, include the cache context ID for easier debugging

Issue #2513094 by hchonov, pfrenssen, mkalkbrenner, yched, Berdir: ContentEntityBase::getTranslatedField and ContentEntityBase::__clone break field reference to parent entity

Issue #2533822 by alexpott: Duplicate array keys in CssOptimizerUnitTest resulting in missing test coverage

Issue #2539310 by neclimdul, alexpott: BackendCompilerPassTest::testProcess fails when sqlite not installed

This reverts commit c523c995.

Issue #2338081 by pwolanin, dawehner, effulgentsia, kgoel, vijaycs85, mpdonadio, chx, brandon.holtsclaw, alexpott, Gábor Hojtsy, Fabianx, catch, YesCT, JvE: Local Tasks, Actions, and Contextual links mark strings from derivatives (or alter hooks) as safe and translated

Issue #2524082 by pfrenssen, Gábor Hojtsy, Wim Leers, Berdir, Fabianx, dawehner, catch: Config overrides should provide cacheability metadata

Issue #2525884 by jesperjb, joshi.rohit100, Berdir: Avoid unecessary cache tag invalidations in ConfigEntityBase and aggregator Item entity

Issue #2536644 by tim.plunkett: generate-proxy-class.php should generate the same file regardless of a missing leading slash

Issue #2409701 by tstoeckler, Leksat, Schnitzel, _nolocation, Gábor Hojtsy, xjm: Field storage configuration is not exposed to config translation UI

Issue #2527846 by dawehner, Wim Leers: Try to get rid of Url::fromRoute() in system_js_settings_alter()

Issue #2497275 by borisson_, alexpott, dawehner, Gábor Hojtsy: ~50 calls to t() for two strings in LanguageManager() on every request

Revert "Issue #2497275 by borisson_, alexpott: ~50 calls to t() for two strings in LanguageManager() on every request"

This reverts commit fe4cd2cf.

Issue #2497275 by borisson_, alexpott: ~50 calls to t() for two strings in LanguageManager() on every request

Issue #2536456 by mbovan, Berdir, Wim Leers, dawehner: Autocomplete is broken (its JS it not loaded)