{% autoescape false %}
<header class="jumbotron subhead" id="overview">
    <h1><i class="glyph2x-magic"></i>Baïkal upgrade wizard</h1>
    <p class="lead">{{ message }}</p>
</header>
<p>Please create a backup before upgrading.</p>
<p>Upgrading might take a few minutes depending on the number of events and contacts. <strong>Do not interrupt the upgrade!</strong></p>
<p>&nbsp;</p>
<p>
<div id="loader" class="loader" style="display: none;"></div>
<a id="upgradeButton" class="btn btn-success" onclick="showLoader()" href="{{ projectUri }}admin/install/index.php?upgradeConfirmed=true">Start upgrade</a>
</p>
<script>
    function showLoader() {
        $("#upgradeButton").hide();
        $("#loader").show();
    }
</script>
{% endautoescape %}