New: update ckeditor to 3.5.3

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htdocs/includes/ckeditor/INSTALL.html

htdocs/includes/ckeditor/LICENSE.html

htdocs/includes/ckeditor/adapters/jquery.js

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htdocs/includes/ckeditor/ckeditor.jgz

htdocs/includes/ckeditor/ckeditor.js

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htdocs/includes/ckeditor/ckeditor.php

htdocs/includes/ckeditor/ckeditor_basic.js

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htdocs/includes/ckeditor/ckeditor_source.js

htdocs/includes/ckeditor/config.js

htdocs/includes/ckeditor/contents.css

htdocs/includes/ckeditor/lang/_languages.js

htdocs/includes/ckeditor/lang/_translationstatus.txt

htdocs/includes/ckeditor/lang/af.js