classic editor 기반
lang = ko
plugins = [ AutoImage, Autoformat, Bold, CKFinder, CKFinderUploadAdapter, Essentials, FontBackgroundColor, FontColor, FontSize, Heading, HtmlEmbed, Image, ImageInsert, ImageResize, ImageStyle, ImageToolbar, ImageUpload, Indent, Italic, Link, List, MediaEmbed, Paragraph, Table, TableToolbar ]