Initial commit of account_dunning module

review939002

view/dunning_level_list_sequence.xml

@@ -0,0 +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 string="dunning levels" sequence="sequence">
+    <field name="procedure" expand="1"/>
+    <field name="days" expand="1"/>
+</tree>