allow 'open' transition from 'closed' state.

bt5/erp5_payment_mean/WorkflowTemplateItem/portal_workflow/payment_transaction_group_validation_workflow/states/closed.xml

@@ -32,6 +32,8 @@
                 <string>cancel_action</string>
                 <string>deliver</string>
                 <string>deliver_action</string>
+                <string>open</string>
+                <string>open_action</string>
               </tuple>
             </value>
         </item>

bt5/erp5_payment_mean/bt/revision

-12
\ No newline at end of file
+13
\ No newline at end of file