Issue #2181527 by nod_, Wim Leers, sqndr: Contextual's toolbar toggle doesn't appear once the client-side cache is filled.

Issue #2114563 by joelpittet, martin107, Cottser: Remove TwigReference with the help of 'without' filter replacing 'show'/'hide' functions.

Revert "Issue #2210197 by sun, longwave: Remove public access to Extension::$type, ::$name, ::$filename." Broke 'drush en simpletest' on testbots

This reverts commit 2c51074d.

Issue #2192649 by sun, chakrapani, sidharthap: Remove drupal_set_title() from installation and update process.

Issue #2008806 by damiankloip, fubhy: Add getIfOwner(), setIfOwner() and deleteIfOwner() methods to TempStore.

Issue #2073621 by Cyberschorsch, m1n0: Remove unneeded variables from template_preprocess_maintenance_page().

Issue #2143519 by followup yched, swentel: Allow FieldInstance yml files to refer to the Field by field name rather than by field_uuid.

Issue #2207197 by longwave, andrei.dincu, jhodgdon: Obsolete docs in WebTestBase::drupalPlaceBlock()?.

Issue #2134887 by zwischenzug, yched, plopesc: Move field_view_field() / field_view_value() to methods.

Issue #2156793 by Wim Leers, jessebeach: Unravel a PHP 5.4 workaround for Edit module once Drupal requires PHP 5.4.

Issue #106721 by msonnabaum, lotyrin, erikwebb, catch, ezra-g, joelpittet, oleg.medvedev, jrglasgow, dawehner, bdragon: Optimize node access queries.

Issue #1680022 by ellishettinga, alexkb, Xano, barickx, Bojhan | droplet: Import default "Tags" field's help text (No one know they can use "quote, mark" in tags).

Issue #2202143 by alexpott, benjy: Multiple calls to ConfigFactory::get() inside t() is unnecessary.

Issue #2195675 by philipz, mdrummond, LewisNyman: Breadcrumbs push the sidebar down on node edit pages.

Issue #2029225 by cilefen, Cottser: Twig debug output does not show the base or derived hooks when a theme suggestion is called directly.

Issue #2191011 by Stuart Miller, Cottser: PHP Warnings in views_preprocess_page() caused by frontpage view.