Hight separator if no export format exists (just UI).

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@38703 20353a03-c40f-0410-a6d1-a30d3c3de9de

bt5/erp5_km/SkinTemplateItem/portal_skins/erp5_km_widget_library/Base_viewDownloadWidget.xml

@@ -52,7 +52,8 @@
        onClick="javascript:toggleElement(\'div\', \'download-document-format-list-menu\');"> Download</span>\n
   <div class="download-document-format-list-menu" style="opacity: 0.999999; display: none;">\n
     <ul>\n
-      <li class="separator">\n
+      <li class="separator"\n
+          tal:attributes="class python: test(len(target_format_item_list), \'separator\',\'\')">\n
         <a tal:attributes="href string:${document_url}/Base_download"\n
            i18n:domain="erp5_ui" \n
            i18n:translate=""\n