campanhas_email/views/website_mass_mailing.xml

<?xml version="1.0" encoding="utf-8"?>
<openerp>
    <data>
        <template id="assets_frontend" inherit_id="website.assets_frontend" name="wesbite_mass_mailing assets">
            <xpath expr="." position="inside">
                <script type="text/javascript" src="/mass_mailing/static/src/js/website_mass_mailing.js"></script>
            </xpath>
        </template>

        <template id="assets_editor" inherit_id="website.assets_editor" name="wesbite_mass_mailing Editor assets">
            <xpath expr="/t" position="inside">
                <script type="text/javascript" src="/mass_mailing/static/src/js/website_mass_mailing.editor.js" groups="base.group_website_publisher"></script>
            </xpath>
        </template>
    </data>
</openerp>