Fix title for introduction (with i18n)

lib/utils/navigation.js

@@ -36,7 +36,7 @@ function navigation(summary, files) {
         var prev = null, next = null;
 
         // Skip if no path
-        if(!current.path) return null;
+        if(!current.exists) return null;
 
         // Find prev
         prev = _.chain(navNodes)
@@ -59,6 +59,7 @@ function navigation(summary, files) {
         return [current.path, {
             index: i,
             title: current.title,
+            introduction: current.introduction,
             prev: prev,
             next: next,
             level: current.level,

theme/templates/website/page.html

@@ -10,7 +10,7 @@
     {% endif %}
 {% endblock %}
 
-{% block title %}{{ progress.current.title }} | {{ title }}{% endblock %}
+{% block title %}{% if progress.current.introduction and not progress.current.title %}{% i18n "SUMMARY_INTRODUCTION" %}Introduction{% endi18n %}{% else %}{{ progress.current.title }}{% endif %} | {{ title }}{% endblock %}
 {% block description %}{% if progress.current.level == "0" %}{{ description }}{% endif %}{% endblock %}
 
 {% block content %}