CKEditor (edit)
https://vkhangyang.wordpress.com/2012/07/14/su-dung-ckeditor-vo-ung-dung-asp-net-mvc-3/
https://vkhangyang.wordpress.com/2012/07/09/thm-xa-sua-nhanh-chng-voi-asp-net-mvc-3/
https://vkhangyang.wordpress.com/2016/12/31/su-dung-ckeditor-vao-ung-dung-asp-net-core/
