Only displaying page tags if there are any

_includes/components/tags.html

@@ -1,8 +1,10 @@
+{% if page.tags and page.tags.size > 0 %}
 <h4>Page tags</h4>
 <div class="metatags">
   {% for child in page.tags %}
   <p class="label">
     <a href="{{ site.url }}{{ site.baseurl }}/tags#{{ child | slugify }}">{{ child }}</a>
   </p>
   {% endfor %}
-</div>
+</div>
+{% endif %}