[svn r17787] FS#2867 - FCKEditor, configuration options for the tool introduction sections: Clearing the global variable $fck_attribute immediatelly after its use to ensure that the concrete settings will not interfere in other places.
* @author Patrick Cool <patrick.cool@UGent.be>, Ghent University - ability for course admins to specify wether uploaded documents are visible or invisible by default.
* @author Roan Embrechts, code refactoring and virtual course support