web/web_ir_actions_act_window_page/view/qweb.xml

<?xml version="1.0" encoding="UTF-8"?>
<openerp>
    <data>
        <template id="assets_backend"
                  name="web_ir_actions_act_window_page assets"
                  inherit_id="web.assets_backend">
            <xpath expr="." position="inside">
                <script type="text/javascript"
                        src="/web_ir_actions_act_window_page/static/src/js/web_ir_actions_act_window_page.js"></script>
            </xpath>
        </template>
    </data>
</openerp>