in previous commit, xmllib generated None string for before/after script, now...

in  previous commit, xmllib generated None string for before/after script, now it get back to empty, so commit it as all test are failling with None string

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@21615 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/bootstrap/erp5_core/WorkflowTemplateItem/portal_workflow/edit_workflow/transitions/edit_action.xml

@@ -35,7 +35,7 @@
         </item>
         <item>
             <key> <string>after_script_name</string> </key>
-            <value> <string>None</string> </value>
+            <value> <string></string> </value>
         </item>
         <item>
             <key> <string>description</string> </key>
@@ -57,7 +57,7 @@
         </item>
         <item>
             <key> <string>script_name</string> </key>
-            <value> <string>None</string> </value>
+            <value> <string></string> </value>
         </item>
         <item>
             <key> <string>title</string> </key>

product/ERP5/bootstrap/erp5_core/bt/revision

-849
\ No newline at end of file
+850
\ No newline at end of file