Add expand on tree view

and unify layout of form view.

issue8644
review262131002

view/dunning_level_form.xml

@@ -1,12 +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="overdue">
     <label name="procedure"/>
-    <field name="procedure" colspan="3"/>
+    <field name="procedure"/>
     <label name="sequence"/>
     <field name="sequence"/>
-    <newline/>
+
     <label name="overdue"/>
     <field name="overdue"/>
 </form>

view/dunning_list.xml

@@ -2,11 +2,11 @@
 <!-- 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>
-    <field name="line"/>
-    <field name="party"/>
+    <field name="line" expand="1"/>
+    <field name="party" expand="2"/>
     <field name="amount"/>
     <field name="maturity_date"/>
-    <field name="level"/>
+    <field name="level" expand="1"/>
     <field name="blocked"/>
     <field name="state"/>
 </tree>