web_techsystech/web_tree_many2one_clickable/views/asset.xml

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

        <template id="assets_backend" name="Many2one clickable assets" inherit_id="web.assets_backend">
            <xpath expr="." position="inside">
                <script type="text/javascript" src="/web_tree_many2one_clickable/static/src/js/web_tree_many2one_clickable.js"></script>
            </xpath>
        </template>

    </data>
</openerp>