Web Browser Paste Image from Clipboard
http://joelb.me/blog/2011/code-snippet-accessing-clipboard-images-with-javascript/
http://ckeditor.com/forums/Plugins/ImagePaste-plugin-for-Firefox
http://stackoverflow.com/questions/2115302/ckeditor-image-upload-filebrowseruploadurl
http://alfonsoml.blogspot.com.es/2009/12/using-your-own-uploader-in-ckeditor.html