Issue #2494131 by webchick, mgifford, mohit_aghera, LewisNyman, yoroy: Placeholder text for site name in installer can be confusing

Issue #2473709 by nicoloye, marcvangend, pjbaert, yoroy, webchick: Do not use SERVER_NAME as default value for the site name

Issue #2432791 by alexpott, vijaycs85, tim.plunkett, joshtaylor, Fabianx, Berdir, yched, bojanz: Skip Config::save schema validation of config data for trusted data.

Issue #2349651 by larowlan, yannisc: Fixed Default contact form does not send email as email recipient is not set during the installation.

Revert "Issue #2349651 by yannisc, larowlan: Fixed Default contact form does not send email as email recipient is not set during the installation."

This reverts commit 62f8b460.

Issue #2349651 by yannisc, larowlan: Fixed Default contact form does not send email as email recipient is not set during the installation.

Issue #1998638 by damiankloip, dawehner, kim.pepper, cosmicdreams, alexpott, larowlan, Damien Tournoud: Replace almost all remaining superglobals (, , etc.) with Symfony Request object.

Issue #1998638 by damiankloip, dawehner, kim.pepper, cosmicdreams, larowlan, Damien Tournoud: Replace all remaining superglobals (, , etc.) with Symfony Request object.

Issue #562042 by cburschka, Rob Loach, sun, scor: Added Search for install profiles in sites/[all|site]/profiles folders, and move core profiles into /core/profiles.

#420358 follow-up by Dave Reid: Rename profiles default => standard and expert => minimal, for consistency with labels.

- Patch #502190 by jhodgdon, stella, sun: hook implementation headers out of compliance with standards.

#509398 by adrian: Turned install profiles into modules with full access to the Drupal API. Almost all WTFs/minute now removed from install profiles. Woohoo! :D

- Patch #524728 by David_Rothstein, JoshuaRogers, JacobSingh et al: refactor install.php to allow Drupal to be installed from the command line.

Roll-back of #503982 which caused test failures. One day, I will learn that not even a *one word* patch is immune from causing test failures.

- Patch #413192 by catch et al: make taxonomy terms fieldable (not to be confused with taxonomy terms as fields).

- Patch #428744 by Gabor: make the main page content a real block and clean up some of the content API.