pos/pos_journal_image/views/templates.xml

<?xml version="1.0" encoding="UTF-8"?>
<!--
Copyright (C) 2019 - Today: GRAP (http://www.grap.coop)
@author: Sylvain LE GAL (https://twitter.com/legalsylvain)
License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
-->
<openerp><data>

    <template id="pos_journal_image_js" inherit_id="point_of_sale.assets_backend">
        <xpath expr="." position="inside">
            <script type="text/javascript" src="/pos_journal_image/static/src/js/pos_journal_image.js"></script>
        </xpath>
    </template>

    <template id="pos_journal_image_css" inherit_id="point_of_sale.index">
        <xpath expr="//head" position="inside">
            <link rel="stylesheet" href="/pos_journal_image/static/src/css/pos_journal_image.css"/>
        </xpath>
    </template>

</data></openerp>