erp5_workflow: add configuration workflow to the allowed content of ERP5 Workflow Tool.

bt5/erp5_workflow/PortalTypeAllowedContentTypeTemplateItem/allowed_content_types.xml

@@ -5,6 +5,7 @@
   <item>Variable</item>
  </portal_type>
  <portal_type id="ERP5 Workflow Tool">
+  <item>Configuration Workflow</item>
   <item>Interaction Workflow</item>
   <item>Workflow</item>
  </portal_type>

bt5/erp5_workflow/bt/template_portal_type_allowed_content_type_list

 Configuration Workflow | Configuration State
 Configuration Workflow | Configuration Transition
 Configuration Workflow | Variable
+ERP5 Workflow Tool | Configuration Workflow
 ERP5 Workflow Tool | Interaction Workflow
 ERP5 Workflow Tool | Workflow
 Interaction Workflow | Interaction