odoo/addons/portal_sale/portal_sale_view.xml

<?xml version="1.0"?>
<openerp>
    <data>

        <record id="action_picking_tree" model="ir.actions.act_window">
            <field name="name">Delivery Orders</field>
            <field name="res_model">stock.picking.out</field>
            <field name="type">ir.actions.act_window</field>
            <field name="view_type">form</field>
            <field name="view_mode">tree,form</field>
            <field name="domain">[('type','=','out')]</field>
            <field name="context">{'default_type': 'out', 'contact_display': 'partner_address'}</field>
            <field name="search_view_id" ref="stock.view_picking_out_search"/>
            <field name="help">This is the list of all delivery orders that have to be prepared, according to your different orders.</field>
        </record>

        <record id="product_normal_action" model="ir.actions.act_window">
            <field name="name">Products</field>
            <field name="type">ir.actions.act_window</field>
            <field name="res_model">product.product</field>
            <field name="view_type">form</field>
            <field name="view_mode">kanban,tree,form</field>
            <field name="view_id" ref="product.product_kanban_view"/>
            <field name="search_view_id" ref="product.product_search_form_view"/>
        </record>

        <menuitem name="Quotations" id="portal_quotations" parent="portal.portal_orders"
            action="sale.action_order_tree5" sequence="10"/>
        <menuitem name="Sales Orders" id="portal_sales_orders" parent="portal.portal_orders"
            action="sale.action_order_form" sequence="20"/>
        <menuitem name="Delivery Orders" id="portal_delivery" parent="portal.portal_orders"
            action="action_picking_tree" sequence="30"/>
        <menuitem name="Products" id="portal_products" parent="portal.portal_orders"
            action="product_normal_action" sequence="40"/>

        <menuitem name="Invoice" id="portal_invoices" parent="portal.portal_invoices_payements"
            action="account.action_invoice_tree1" sequence="10"/>
        <menuitem name="Refund/Payments" id="portal_payments" parent="portal.portal_invoices_payements"
            action="account_voucher.action_vendor_receipt" sequence="20"/>

    </data>
</openerp>