erp5_core: in action button script, get action refference instead of id.

product/ERP5/bootstrap/erp5_core/SkinTemplateItem/portal_skins/erp5_core/Base_getFormViewDialogActionButtonTitle.xml

@@ -58,9 +58,12 @@ if button_title is not None:\n
 \n
 wf_actions =  context.portal_actions.portal_actions.listFilteredActionsFor(context)[\'workflow\']\n
 workflow_action = request.get(\'workflow_action\', None) or request.get(\'field_my_workflow_action\', None)\n
+\n
 if workflow_action:\n
-  for action in wf_actions: \n
-    if action[\'id\'] == workflow_action:\n
+  for action in wf_actions:\n
+    # extract action reference from the url predefined\n
+    action_reference  = action[\'url\'][action[\'url\'].find(\'workflow_action\')+16:]\n
+    if action_reference == workflow_action:\n
       return action[\'name\']\n
 \n
 if workflow_action:\n