Issue #2863996 by nlisgo, Jo Fitzgerald, scuba_fly, dawehner: Convert web tests to browser tests for ckeditor module

Issue #2854529 by alexpott, xjm, klausi, Chi, Mixologic: Fix Drupal.Scope.MethodScope - all methods should have scopes

Issue #2749475 by thpoul, Wim Leers, maskedjellybean, Orizontal, bohemier: Duplicate labels for Styles dropdown causes Styles to not render: add validation to prevent this