erp5_trade: sale packing list init

bt5/erp5_trade/PortalTypeTemplateItem/portal_types/Sale%20Packing%20List.xml

@@ -64,7 +64,7 @@
         </item>
         <item>
             <key> <string>init_script</string> </key>
-            <value> <string>Delivery_generateReference</string> </value>
+            <value> <string>SalePackingList_init</string> </value>
         </item>
         <item>
             <key> <string>permission</string> </key>
@@ -80,6 +80,12 @@
             <key> <string>type_class</string> </key>
             <value> <string>PackingList</string> </value>
         </item>
+        <item>
+            <key> <string>type_interface</string> </key>
+            <value>
+              <tuple/>
+            </value>
+        </item>
       </dictionary>
     </pickle>
   </record>