Added new sub navigation component

app/templates/components/sub-navigation.html

@@ -0,0 +1,24 @@
+{% macro sub_navigation(
+  item_set
+) %}
+	<nav class="sub-navigation">
+	  <ol itemscope itemtype="http://schema.org/ItemList">
+	  	{% for item in item_set %}	  	  
+		  <li class="sub-navigation__item {% if item['link'] == request.endpoint %} sub-navigation__item--active {% endif %}" 
+		  	  itemprop="itemListElement" 
+		  	  itemscope 
+		  	  itemtype="http://schema.org/ListItem"
+		  >
+	        <a href="{% if item['external_link'] %} 
+	        			{{ item['link'] }} 
+	        		 {% else %} 
+	        		 	{{ url_for(item['link']) }} 
+	        		 {% endif %}" 
+	        	itemprop="item">
+	        	<span itemprop="name">{{item['name']}}</span>
+	        </a>
+	      </li>
+	  	{% endfor %}
+	  </ol>
+	</nav>
+{% endmacro %}