fix favicon

themes/simple/templates/base.html

@@ -1,6 +1,7 @@
 <!DOCTYPE html>
 <html lang="{% block html_lang %}{{ DEFAULT_LANG }}{% endblock html_lang %}">
 <head>
+        <link rel="shortcut icon" href="{{ SITEURL }}/images/favicon.ico?v=2" />
         <link rel="stylesheet" href="https://unpkg.com/purecss@2.0.6/build/pure-min.css" integrity="sha384-Uu6IeWbM+gzNVXJcM9XV3SohHtmWE+3VGi496jvgX1jyvDTXfdK+rfZc8C1Aehk5" crossorigin="anonymous">
         <meta name="viewport" content="width=device-width, initial-scale=1">
         <link rel="stylesheet" href="{{ SITEURL }}/{{ THEME_STATIC_DIR }}/css/{{ CSS_FILE }}" />