web.xml

<?xml version="1.0" encoding="utf-8" ?>
<!--
    Copyright 2018 Alexandre Díaz
    License LGPL-3.0 or later (http://www.gnu.org/licenses/lgpl.html).
-->
<odoo>
    <template
        id="webclient_bootstrap"
        inherit_id="web.webclient_bootstrap"
        name="App Drawer - Web Client"
    >
        <xpath expr="//t[@t-set='body_classname']" position="attributes">
            <attribute
                name="t-value"
                add="+ ' o_chatter_position_' + (request.env.user.chatter_position or 'normal')"
                separator=" "
            />
        </xpath>
    </template>
    <template
        id="responsive_web_layout"
        inherit_id="web.layout"
        name="Responsive Layout"
    >
        <xpath expr="//meta[last()]" position="after">
            <meta
                name="viewport"
                content="width=device-width, initial-scale=1, user-scalable=no"
            />
        </xpath>
    </template>
</odoo>