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

core/modules/contextual/contextual.base-rtl.css

core/modules/contextual/contextual.base.css

core/modules/contextual/contextual.js

core/modules/contextual/contextual.module

core/modules/contextual/contextual.theme-rtl.css

core/modules/contextual/contextual.theme.css

core/modules/edit/edit.module

core/modules/forum/lib/Drupal/forum/Tests/ForumTest.php

core/modules/menu/lib/Drupal/menu/MenuFormController.php

core/modules/menu/lib/Drupal/menu/MenuListController.php

core/modules/menu/lib/Drupal/menu/Tests/MenuTest.php

core/modules/menu/menu.admin.inc

core/modules/menu/menu.module

core/modules/shortcut/shortcut.module

...es/system/lib/Drupal/system/Tests/Menu/BreadcrumbTest.php

core/modules/toolbar/css/toolbar.base.css

core/modules/toolbar/css/toolbar.theme.css

core/modules/toolbar/js/toolbar.js

core/modules/toolbar/templates/toolbar.html.twig

...es/toolbar/tests/modules/toolbar_test/toolbar_test.module