Add location-option autoindex

webserver/templates/location-header

@@ -12,6 +12,8 @@
     {% endif %}
     {% if location.indices is defined %}
         index {{location.indices|join(" ")}};
+    {% elif location.autoindex is defined and location.autoindex %}
+        autoindex on;
     {% endif %}
     {% if location.error_pages is defined %}
         {% for error_page in location.error_pages %}