allow to go from syncing to conflict state

bt5/erp5_syncml/WorkflowTemplateItem/portal_workflow/syncml_signature_validation_workflow/states/syncing.xml

@@ -22,6 +22,7 @@
             <key> <string>transitions</string> </key>
             <value>
               <tuple>
+                <string>change_to_conflict</string>
                 <string>synchronize</string>
               </tuple>
             </value>

bt5/erp5_syncml/bt/revision

-86
+87
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