Merge branch '8.x' of git.drupal.org:project/drupal into 8.x

README.txt

core/INSTALL.txt

core/UPGRADE.txt

core/includes/bootstrap.inc

core/includes/common.inc

core/includes/install.core.inc

core/includes/install.inc

core/includes/theme.maintenance.inc

core/lib/Drupal/Core/Updater/Module.php

core/lib/Drupal/Core/Updater/Theme.php

core/lib/Drupal/Core/Updater/Updater.php

core/misc/tabledrag.js

core/modules/README.txt

...ules/config/lib/Drupal/config/ConfigStorageController.php

core/modules/menu/menu.admin.js

core/modules/menu/menu.js

core/modules/menu/menu.module

core/modules/overlay/overlay-child.js

core/modules/overlay/overlay-parent.js

core/themes/README.txt