Navigation links in footer

_includes/episode_navbar.html

+{% comment %}
+  Find previous and next episodes (if any).
+  Including file must pass episode_navbar_title=true or ...=false to display episode title.
+{% endcomment %}
+{% for episode in site.episodes  %}
+  {% if episode.url == page.url %}
+    {% unless forloop.first %}
+      {% assign prev_episode = prev %}
+    {% endunless %}
+    {% unless forloop.last %}
+      {% assign next_episode = site.episodes[forloop.index] %}
+    {% endunless %}
+  {% endif %}
+  {% assign prev = episode %}
+{% endfor %}
+
+{% comment %}
+  Display title and prev/next links.
+{% endcomment %}
+<div class="row">
+  <div class="col-md-1">
+    <h3>
+      {% if prev_episode %}
+      <a href="{{ page.root }}{{ prev_episode.url }}"><span class="glyphicon glyphicon-menu-left"></span></a>
+      {% else %}
+      <a href="{{ page.root }}/"><span class="glyphicon glyphicon-menu-up"></span></a>
+      {% endif %}
+    </h3>
+  </div>
+  <div class="col-md-10">
+    {% if include.episode_navbar_title %}
+    <h3 class="maintitle"><a href="{{ page.root }}/">{{ site.title }}</a></h3>
+    <h1 class="maintitle">{{ page.title }}</h1>
+    {% endif %}
+  </div>
+  <div class="col-md-1">
+    <h3>
+      {% if next_episode %}
+      <a href="{{ page.root }}{{ next_episode.url }}"><span class="glyphicon glyphicon-menu-right"></span></a>
+      {% else %}
+      <a href="{{ page.root }}/"><span class="glyphicon glyphicon-menu-up"></span></a>
+      {% endif %}
+    </h3>
+  </div>
+</div>

_includes/lesson_footer.html

-<hr/>
 <footer>
   <div class="row">
     <div class="col-md-6" align="left">

_includes/workshop_footer.html

-<hr/>
 <footer>
   <div class="row">
     <div class="col-md-6" align="left">

_layouts/break.html

 ---
 layout: base
 ---
-{% include episode_title.html %}
+{% include episode_navbar.html episode_navbar_title=true %}
 {% include episode_break.html %}
 {{content}}
+{% include episode_navbar.html episode_navbar_title=false %}

_layouts/episode.html

 ---
 layout: base
 ---
-{% include episode_title.html %}
+{% include episode_navbar.html episode_navbar_title=true %}
 {% include episode_overview.html %}
 {{content}}
 {% include episode_keypoints.html %}
+{% include episode_navbar.html episode_navbar_title=false %}