odoo/addons/mail/mail_subscription_view.xml

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

        <!-- 
            SUBSCRIPTION
                !-->
        
        <record model="ir.ui.view" id="view_subscription_tree">
            <field name="name">mail.subscription.tree</field>
            <field name="model">mail.subscription</field>
            <field name="type">tree</field>
            <field name="sequence">10</field>
            <field name="arch" type="xml">
                <tree string="Subscription">
                    <field name="user_id"/>
                    <field name="res_model"/>
                    <field name="res_id"/>
                </tree>
            </field>
        </record>

        <!-- 
            NOTIFICATION
                !-->
        
        <record model="ir.ui.view" id="view_notification_tree">
            <field name="name">mail.notification.tree</field>
            <field name="model">mail.notification</field>
            <field name="type">tree</field>
            <field name="sequence">10</field>
            <field name="arch" type="xml">
                <tree string="Subscription">
                    <field name="user_id"/>
                    <field name="message_id"/>
                    <field name="read"/>
                </tree>
            </field>
        </record>

        <record id="action_view_subscriptions" model="ir.actions.act_window">
            <field name="name">Subscriptions</field>
            <field name="res_model">mail.subscription</field>
            <field name="view_type">form</field>
            <field name="view_mode">tree,form</field>
        </record>

        <record id="action_view_notifications" model="ir.actions.act_window">
            <field name="name">Pushed notif</field>
            <field name="res_model">mail.notification</field>
            <field name="view_type">form</field>
            <field name="view_mode">tree,form</field>
        </record>

    </data>
</openerp>