better support for `summary` plugin

templates/index.html

@@ -34,6 +34,8 @@
             </a>
             {% if SHOW_FULL_ARTICLE %}
                 {{ article.content }}
+            {% elif article.has_summary %}
+                {{ article.summary }}
             {% elif article.summary %}
                 {{ article.summary|truncate(140) }}
             {% endif %}