Issue #2553661 by claudiu.cristea, geertvd, dawehner, Xano, neclimdul: KernelTestBase fails to set up FileCache

Issue #2568793 by joelpittet, alexpott, Cottser, klausi: Replace remaining !placeholder for Non-URL HTML when format_size() is involved

Issue #2557113 by stefan.r, alexpott, dawehner, joelpittet, cilefen, lauriii, plach, catch, chx, xjm: Make t() return a TranslationWrapper object to remove reliance on a static, unpredictable safe list

Issue #2569289 by lauriii, dawehner, stefan.r: Replace remaining !placeholder for Non-URL HTML outputs only in #title in file widgets

Issue #2569279 by dawehner, izus: Replace remaining !placeholder for Non-URL HTML outputs only in contextual.module

Issue #2477223 by Mile23, Wim Leers, j2r, ianthomas_uk, jaimeguzman, pjbaert: Refactor _drupal_add_html_head, drupal_get_html_head, _drupal_add_html_head_link into the attachments processor, remove from common.inc

This reverts commit 33608908.

Issue #2545972 by alexpott, joelpittet, ericjenkins, stefan.r, Wim Leers, Cottser: Remove all code usages SafeMarkup::checkPlain() and rely more on Twig autoescaping

Issue #2569295 by geertvd, lauriii: Replace remaining !placeholder for Non-URL HTML outputs only in #title lines

Issue #2569293 by lauriii, alexpott, dawehner: Replace remaining !placeholder for Non-URL HTML outputs only in code Table.php

Issue #2552865 by Mile23: Deprecate drupal_process_attached() for 8.0.0 and either throw an Exception or make it work via the RenderContext

Issue #2568781 by dawehner, lauriii, stefan.r: Replace remaining !placeholder for Non-URL HTML outputs only for $entity->label()

Issue #2408165 by phenaproxima, miguelc303, quietone, eliza411, tim.plunkett, bdone, benjy: Migration Files for Drupal 7  Blocks

Issue #2568603 by dawehner, xjm, pguillard: Replace remaining !placeholder for Non-URL HTML outputs only in core/lib/Drupal/Core/Database/Driver/pgsql/Install/Tasks.php

Issue #2569371 by Wim Leers: Update Renderer::createPlaceholder() to not use Attribute and SafeMarkup::format()

Issue #2568607 by alexpott, dawehner: Replace remaining !placeholder for Non-URL HTML outputs only in Theme name stuff in SystemController

Issue #2568611 by alexpott: Replace remaining !placeholder for Non-URL HTML outputs only in search_excerpt()

Issue #2568609 by alexpott: Replace remaining !placeholder for Non-URL HTML outputs only in theme functions in system.admin.inc

Issue #2560863 by alexpott, stefan.r, lauriii: #options for radios and checkboxes uses SafeMarkup::checkPlain() to escape - use Html::escape() instead

Issue #2568605 by pguillard: Replace remaining !placeholder for Non-URL HTML outputs only in template_preprocess_comment()

Issue #2511516 by lauriii, Xano, Wim Leers, dawehner: Make local tasks and actions hooks provide cacheability metadata, to make the blocks showing them cacheable

Issue #2513576 by willzyx, manauwarsheikh, zakir.gori, masipila: User edit form status radio buttons empty if user status is blocked

Issue #2564857 by bruvers, rudraram, thamas, LewisNyman: Long forum description breaks the layout in forum list

Issue #2177769 by jbrauer, alansaviolobo, anavarre, am_Sreenivasan, greggles: User module should recommend longer password

Issue #2567855 by lauriii, xjm: Replace !placeholder with @placeholder in format_string() for non-URLs

Issue #2534074 by Dom., manishmore, poornima.n: Update error messages in field formatter when no Responsive Image Style available

Issue #2566335 by damiankloip, dawehner: Context data is not passed to normalize() field calls in ComplexDataNormalizer

Issue #2539472 by mikeker, mondrake, harings_rob: Pager "first" and "previous" links have incorrect URLs

Issue #2495301 by Mile23, mohit_aghera, JeroenT, dcmul, naveenvalecha, borisson_, cilefen, alivadniy, andypost, xjm: Deprecate user_format_name() and the label_callback for 9.x (not 8.x)

Issue #2564283 by alexpott, stefan.r, joelpittet: Remove use of SafeMarkup::checkPlain() from adminSummary() and adminLabel() in views plugins

Issue #2506445 by joelpittet, Ryan Weal, Sutharsan, alexpott, subhojit777, justAChris, nlisgo, effulgentsia, rpayanm, larowlan, chx, xjm, dawehner, geertvd, lauriii, izus, andypost, borisson_, Sharique: Replace !placeholder with @placeholder in t() and format_string() for non-URLs in tests