Allow ordering credentials

issue9909
review322781002

carrier.py

@@ -1,11 +1,12 @@
 # This file is part of Tryton.  The COPYRIGHT file at the top level of
 # this repository contains the full copyright notices and license terms.
-from trytond.model import ModelSQL, ModelView, MatchMixin, fields
+from trytond.model import (
+    ModelSQL, ModelView, MatchMixin, sequence_ordered, fields)
 from trytond.pool import PoolMeta
 from trytond.pyson import Eval
 
 
-class CredentialUPS(ModelSQL, ModelView, MatchMixin):
+class CredentialUPS(sequence_ordered(), ModelSQL, ModelView, MatchMixin):
     'UPS Credential'
     __name__ = 'carrier.credential.ups'
 

view/ups_credential_form.xml

@@ -1,9 +1,12 @@
 <?xml version="1.0"?>
 <!-- This file is part of Tryton.  The COPYRIGHT file at the top level of
 this repository contains the full copyright notices and license terms. -->
-<form>
+<form cursor="server">
     <label name="company"/>
     <field name="company"/>
+    <label name="sequence"/>
+    <field name="sequence"/>
+
     <label name="server"/>
     <field name="server"/>
     <separator string="Credential Information" colspan="4" id="credential_info"/>

view/ups_credential_list.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <!-- This file is part of Tryton.  The COPYRIGHT file at the top level of
 this repository contains the full copyright notices and license terms. -->
-<tree>
+<tree sequence="sequence">
     <field name="company" expand="1"/>
     <field name="user_id" expand="2"/>
     <field name="server"/>