pos/pos_tare/views/templates.xml

<?xml version="1.0" encoding="UTF-8"?>
<!--
Copyright (C) 2015-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>
<!-- JS Files -->
    <template id="assets_backend" name="point_of_sale assets2" inherit_id="web.assets_backend">
        <xpath expr="." position="inside">
            <script type="text/javascript" src="/pos_tare/static/src/js/pos_tare.js"></script>
        </xpath>
    </template>

<!-- CSS Files -->
    <template id="index" name="pos_tare index" inherit_id="point_of_sale.index">
        <xpath expr="//link[@id='pos-stylesheet']" position="after">
            <link rel="stylesheet" href="/pos_tare/static/src/css/pos_tare.css" id="pos_tare-stylesheet"/>
        </xpath>
    </template>

</data></openerp>