accounting: properly show items on accounting lines

Because of the wrong TALES, jump and select was not working on the aggregate
relation field on accounting transaction line.

bt5/erp5_accounting/SkinTemplateItem/portal_skins/erp5_accounting/AccountingTransactionLine_view/my_aggregate_title_list.xml

@@ -175,7 +175,7 @@
       <dictionary>
         <item>
             <key> <string>_text</string> </key>
-            <value> <string>python: list(context.getPortalItemTypeList()) + [\'Payment Transaction Group\', ]</string> </value>
+            <value> <string>python: [(x, x) for x in list(context.getPortalItemTypeList()) + [\'Payment Transaction Group\', ]]</string> </value>
         </item>
       </dictionary>
     </pickle>

bt5/erp5_accounting/SkinTemplateItem/portal_skins/erp5_accounting/AccountingTransactionLine_viewDestination/my_aggregate_title_list.xml

@@ -175,7 +175,7 @@
       <dictionary>
         <item>
             <key> <string>_text</string> </key>
-            <value> <string>python: list(context.getPortalItemTypeList()) + (\'Payment Transaction Group\', )</string> </value>
+            <value> <string>python: [(x, x) for x in list(context.getPortalItemTypeList()) + [\'Payment Transaction Group\', ]]</string> </value>
         </item>
       </dictionary>
     </pickle>