phpengine/ui/bars.tpl

<nav class="navbar fixed-top navbar-expand-lg navbar-dark bg-dark">
    <a href="{{@BASEURL}}/"><img class="navbar-brand" src="{{@BASEURL}}/ui/images/logo_text.png" height="90"/></a>
    <div class="collapse navbar-collapse"></div>
    <a class="navbar-brand" href="{{@BASEURL}}/logout">
        <img src="{{@BASEURL}}/ui/images/logout.png" height="90"/>
    </a>
</nav>

<nav class="navbar fixed-bottom navbar-expand-lg navbar-dark bg-dark">
    <div class="collapse navbar-collapse"></div>
    <a class="navbar-brand" href="{{@BASEURL}}">
        <img src="{{@BASEURL}}/ui/images/om-link-logo.png" height="40"/>
    </a>
</nav>