Issue #2183075 by valderama, dinarcon, er.pushpinderrana, amitgoyal, umar-ahmad: Tidy up css.gzip and js.gzip configuration.

Issue #2327095 by tstoeckler: Document how to allow test module and theme installation in example.settings.local.php.

Issue #2251113 by alexpott, damiankloip, Crell, Wim Leers, dawehner, sun: Use container parameters instead of settings.

Issue #2321407 by astrocling | jhodgdon: Fixed Suggested setting in example.settings.local.php for render doesn't work in install.

Issue #2263059 by Bryn Vertesi, Xano: Use example.com not yoursite.com in example.settings.local.php docs

Issue #2309575 follow-up by Wim Leers: [Revert] Remove the null and memory backend definitions from core.services.yml in favour of devel module providing them instead.

Issue #2309575 by undertext | damiankloip: Remove the null and memory backend definitions from core.services.yml in favour of devel module providing them instead.

Issue #2016629 by larowlan, neclimdul, sun, alexpott, jibran, ParisLiakos, donquixote, effulgentsia, msonnabaum: Refactor bootstrap to better utilize the kernel.

Issue #2275877 by Mixologic, duellj, Les Lim, Xano, David Strauss: Replace master/slave terminology with primary/replica.

Issue #2243439 by amitgoyal, jonreid, mark.labrecque, mpv, pwolanin, scor, cilefen, sun: Fix up docs about config file/database locations in settings.php and READMEs in directories

Issue #950534 by mparker17, mgifford, Mixologic, jbloomfield, erinclerico, theMusician, wmostrey | zirvap: [policy] Consistently use email instead of e-mail in Drupal.

Revert "Issue #2016629 by larowlan, neclimdul, sun, alexpott, jibran, ParisLiakos, donquixote, effulgentsia, msonnabaum: Refactor bootstrap to better utilize the kernel."

This reverts commit cda051c4.

Issue #2016629 by larowlan, neclimdul, sun, alexpott, jibran, ParisLiakos, donquixote, effulgentsia, msonnabaum: Refactor bootstrap to better utilize the kernel.

Issue #2263351 by Wim Leers: Text Editor's in-place editing plugin broke in-place editing at large due to PHP fatal.

Issue #2240463 by robertdbailey, balagan, holly.ross.drupal: Fix text: languages are not "enabled/disabled" anymore, they are added/removed.

Issue #2161591 by pwolanin, beejeebus, sun: Change default active config from file storage to DB storage.

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

Issue #2121849 by moshe weitzman: Move chmod.directory and chmod.file out of config and into settings so that file writes are independant of the config system.

Issue #1829170 by LinL, socketwench, vijaycs85, mtift, LittleCoding, andypost, dawehner, ianmthomasuk: Convert the Maintenance Theme variable to settings.

Issue #2038135 by RobLoach, donquixote, Crell, ParisLiakos, catch: Use the Composer autoloader to make everything simpler.

Issue #1856766 by chx, Berdir, heyrocker, kim.pepper: Convert file_public_path() to the new settings system (make it not configurable via UI or YAML).

Issue #1934716 followup by hackwater: [Followup] Merge system.fast_404 config object into system.performance.