web/web_responsive/views/assets.xml

<?xml version="1.0" encoding="utf-8"?>

<!--
    Copyright 2016 LasLabs Inc.
    @author Dave Lasley <dave@laslabs.com>
    License LGPL-3.0 or later (http://www.gnu.org/licenses/lgpl.html).
-->

<odoo>
    <template id="assets_backend" name="Open Mobile Assets" inherit_id="web.assets_backend">
        <xpath expr=".">
            <link rel="stylesheet"
                  href="/web_responsive/static/src/css/web_responsive.scss"
                  />
            <script type="application/javascript"
                    src="/web_responsive/static/src/js/web_responsive.js"
                    />
        </xpath>
    </template>
</odoo>