Fix pb in ecm

htdocs/core/ajax/ajaxdirpreview.php

htdocs/core/class/html.form.class.php

htdocs/core/class/html.formfile.class.php

htdocs/core/lib/files.lib.php

htdocs/core/lib/functions.lib.php

htdocs/core/modules/modECM.class.php

htdocs/ecm/class/ecmdirectory.class.php

htdocs/ecm/docfile.php

htdocs/ecm/docmine.php

htdocs/ecm/index.php