Issue #2234611 by visabhishek, cs_shadow, joachim: Fix up docs for WebTestBase::drupalCreateRole method

Issue #2233787 by alexpott, xjm | tim.plunkett: Move default configuration into extension/config/install to clarify its purpose.

Issue #2241655 by tim.plunkett: EntityStorageInterface::create() should always create a "new" entity.

Issue #2238659 by Jalandhar, Gábor Hojtsy, chx: Clean up some docs in String storage classes and interfaces

Issue #2221695 by brantwynn, ianthomas_uk, grom358, ParisLiakos, Jalandhar: Remove uses of deprecated URL functions.

Issue #2232425 by danblack: Database Schema field/column default value is not properly quoted via PDO::quote().

Issue #2017475 by rodrigoaguilera, Outi, balagan: Multilingual tour for interface translation section.

Issue #1921044 by pakmanlh, Manuel Garcia, rteijeiro, dasjo, aboros, sqndr, LewisNyman: Align the styling of tool tips to be more consistent with Seven.

Issue #2174021 by Xano, dawehner, damiankloip: Make \Drupal\views\Plugin\views\HandlerBase unit-testable.

Issue #2152201 by Salah Messaoud, Manuel Garcia, steveoliver, joelpittet, burgerboydaddy, katy5289, hussainweb, shanethehat, jenlampton, kpa, AnythonyR, EVIIILJ, kgoel, Cottser, dsdeiz, hanpersand: Convert theme_checkboxes() to Twig

Issue #214760 by Jalandhar, lokapujya, dcam, naquah: Theme name in block admin shows HTML entities: excessive check_plain().

Issue #2229157 by cwells, LewisNyman, tompagabor: Add correct button types to account settings forms.

Issue #2156661 by Jalandhar, jsbalsera, ianthomas_uk, sidharthap, jhodgdon: Search admin menu entry uses "settings" -- UI-text standards violation.

Issue #2239255 by cs_shadow, ivanjaros: Action variable is defined twice in BulkForm::viewsFormSubmit.

Issue #2231495 by ACF, andrei.dincu: Array to string conversion error when trying to add a new user.

Issue #1987848 by disasm, ocsilalala, kim.pepper, pwieck, Cottser, pratik60, h3rj4n, pfrenssen, InternetDevels, ParisLiakos, rgoodine, tlyngej, vijaycs85, robeano: Convert system_theme_default() to a new style controller.

Issue #1167248 by Berdir, damiankloip, Alan Evans, beejeebus, catch: Add CacheBackendInterface::setMultiple().

Issue #2238651 by chx: LocaleStringTest is incorrectly asserting source strings instead of translations.

Issue #2151699 by jsbalsera: Move #access responsibility from formatters/widgets to EntityViewDisplay/EntityFormDisplay.

Issue #2101119 by Xano, tim.plunkett: Convert Filter routes to use entity access instead of permissions.