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

core/CHANGELOG.txt

core/COPYRIGHT.txt

core/includes/ajax.inc

core/includes/bootstrap.inc

core/includes/common.inc

core/includes/form.inc

core/includes/install.inc

core/includes/module.inc

core/lib/Drupal/Core/Utility/Color.php

core/misc/ajax.js

core/modules/book/book.module

...s/entity/lib/Drupal/entity/Tests/EntityFieldQueryTest.php

...es/entity_query_access_test/entity_query_access_test.info

.../entity_query_access_test/entity_query_access_test.module

core/modules/file/file.field.inc

core/modules/image/image.admin.css

core/modules/image/image.field.inc

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

core/modules/image/image.theme.css

...s/image/lib/Drupal/image/Tests/ImageThemeFunctionTest.php