Add module purchase_date_planned_update

purchase_date_planned_update/purchase_view.xml

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+   Copyright (C) 2015 Akretion (http://www.akretion.com/)
+   @author: Alexis de Lattre <alexis.delattre@akretion.com>
+   The licence is in the file __openerp__.py
+-->
+
+<openerp>
+<data>
+
+<record id="purchase_order_form" model="ir.ui.view">
+    <field name="name">usability.purchase.order.form</field>
+    <field name="model">purchase.order</field>
+    <field name="inherit_id" ref="purchase.purchase_order_form"/>
+    <field name="arch" type="xml">
+        <button name="purchase_cancel" position="after">
+            <button name="%(po_date_planned_update_action)d" type="action"
+                string="Update Scheduled Date"/>
+        </button>
+    </field>
+</record>
+
+
+</data>
+</openerp>