simulation: associate simulation movement to SortIndex

Sort Index could be useful in various cases in simulation, at least for mrp and
transformations

product/ERP5/bootstrap/erp5_core/PortalTypePropertySheetTemplateItem/property_sheet_list.xml

@@ -48,6 +48,9 @@
   <item>ScriptConstraint</item>
   <item>SimpleItem</item>
  </portal_type>
+ <portal_type id="Simulation Movement">
+  <item>SortIndex</item>
+ </portal_type>
  <portal_type id="String Attribute Match Constraint">
   <item>ConstraintType</item>
  </portal_type>

product/ERP5/bootstrap/erp5_core/bt/template_portal_type_property_sheet_list

@@ -18,6 +18,7 @@ Script Constraint | Predicate
 Script Constraint | Reference
 Script Constraint | ScriptConstraint
 Script Constraint | SimpleItem
+Simulation Movement | SortIndex
 String Attribute Match Constraint | ConstraintType
 TALES Constraint | ConstraintType
 Test Component | SortIndex