Allow external and static items in menu

README.md

@@ -29,7 +29,7 @@ See the above links for details.
 
 This is a [*static website*](http://en.wikipedia.org/wiki/Static_web_page) automatically generated with [Jekyll](http://jekyllrb.com/) by [GitHub Pages](http://pages.github.com/).
 
-### Editing pages online with GitHub
+### Editing pages online with GitHub / GitLab
 
 You can edit any page by following the `Edit this page` link in the Quick links nav bar. 
 Alternatively, you can directly navigate to the corresponding `.md` (Markdown) file in GitHub.
@@ -50,6 +50,30 @@ Other reasons why GitHub's preview may not correspond to the final results are:
 - Use of [Liquid templates](https://github.com/Shopify/liquid/wiki/Liquid-for-Designers) in the source. 
 - Use of special purpose markup, HTML, and scripts, such as mathematical excerpts written in [MathJax](http://mathjax.org/).
 
+### Editing the menu
+
+The menu of the page is defined in the ``_config.yml`` file. 
+It contains three kinds of items:
+1. **Folder menu**. An expandable sub-menu that contains all pages in a specific folder. 
+2. **Internal links**. A single link to a specific page. 
+3. **External links**. A link to an external page that automatically opens in a new tab. 
+
+The items can be defined by inserting them into the appropriate place in the list of menu items. 
+They look like
+```yaml
+# A folder menu for the /people/ folder
+- title: 'People'
+  folder: 'people'
+# A single link to the /news/ page. 
+- title: 'News'
+  url: '/news/'
+# An external link to the bibliography page
+- title: 'Bibliography'
+  external: true
+  url: 'https://kwarc.github.io/bibs/'
+```
+
+
 ### Working locally
 
 If you want to do more than the occasional editing, you'll soon realise GitHub's editor and preview are too limited. 

_config.yml

@@ -17,7 +17,11 @@ gems:
   - jekyll-github-metadata
   - jekyll-redirect-from
 
-exclude: ['public/*.md', 'public/*.html', '*/README.md', '*.synctex.gz', '*.aux', '*.nav', '*.out', '*.snm', '*.tex', '*.log', '*.toc']
+exclude:
+    - 'public/materialize/materialize-src/*'
+    - 'public/*.md'
+    - 'public/*.html'
+    - '*/README.md'
 
 
 # About/contact
@@ -46,6 +50,9 @@ fontawesome:         font-awesome-4.7.0
 menu:
     - title: 'People'
       folder: 'people'
+    - title: 'Bibliography'
+      external: true
+      url: 'https://kwarc.github.io/bibs/'
     - title: 'Research'
       folder: 'research'
     - title: 'Systems'
@@ -56,6 +63,12 @@ menu:
       folder: 'students'
     - title: 'Teaching'
       folder: 'teaching'
+    - title: 'News'
+      url: '/news/'
+    - title: 'Contact'
+      url: '/contact/'
+      
+  
 
 defaults:
   -

_includes/header.html

@@ -28,40 +28,50 @@
   {% assign base_folder = url_parts[1] %}
   {% assign sorted_pages = site.pages | sort:"menu_order" %}
   
-  <li class="no-padding">
-    <ul class="collapsible collapsible-accordion">
-      {% for node in site.menu %}
-        <li class="bold">
-          <a class="collapsible-header {% if base_folder == node.folder %}active{% endif %}">{{ node.title }}</a>
-          <div class="collapsible-body">
-            <ul>
-              {% for sub in sorted_pages %}
-                
-                {% assign sub_parts = sub.url | split: '/' %}
-                {% assign sub_url = sub_parts | last %}
-                {% assign sub_folder = sub_parts[1] %}
-                
-                {% if sub_folder == node.folder %}
-                  {% if sub.hidden == false %}
-                    <li {% if sub_url == base_url %}class="active"{% endif %}>
-                      <a href="{{ sub.url }}">
-                        {% if sub.menu_title %}
-                          {{ sub.menu_title }}
-                        {% else %}
-                          {{ sub.title }}
-                        {% endif %}
-                      </a>
-                    </li>
-                  {% endif%}
-                {% endif %}
-              {% endfor %}
-            </ul>
-          </div>
-        </li>
-      {% endfor %}
-    </ul>
-  </li>
   
-  <li {% if page.url == "/news/" %} class="active" {% endif %}><a href="{{ site.baseurl }}/news/">News</a></li>
-  <li {% if page.url == "/contact/" %} class="active" {% endif %}><a href="{{ site.baseurl }}/contact/">Contact</a></li>
+    {% for node in site.menu %}
+    
+      {% if node.folder %}
+        <li class="no-padding">
+          <ul class="collapsible collapsible-accordion">
+            <li class="bold">
+              <a class="collapsible-header {% if base_folder == node.folder %}active{% endif %}">{{ node.title }}</a>
+              <div class="collapsible-body">
+                <ul>
+                  {% for sub in sorted_pages %}
+                    
+                    {% assign sub_parts = sub.url | split: '/' %}
+                    {% assign sub_url = sub_parts | last %}
+                    {% assign sub_folder = sub_parts[1] %}
+                    
+                    {% if sub_folder == node.folder %}
+                      {% if sub.hidden == false %}
+                        <li {% if sub_url == base_url %}class="active"{% endif %}>
+                          <a href="{{ sub.url }}">
+                            {% if sub.menu_title %}
+                              {{ sub.menu_title }}
+                            {% else %}
+                              {{ sub.title }}
+                            {% endif %}
+                          </a>
+                        </li>
+                      {% endif%}
+                    {% endif %}
+                  {% endfor %}
+                </ul>
+              </div>
+            </li>
+          </ul>
+        </li>
+      {% else if node.url %}
+        <li 
+          {% if page.url == node.url %}
+          class="active"
+          {% endif %}
+        >
+          <a href="{% unless node.external %}{{ site.baseurl }}{% endunless %}{{ node.url }}" {% if node.external %}target="_blank"{% endif %}>{{node.title}}</a>
+        </li>
+      {% endif %}
+  {% endfor %}
+</li>
 </ul>
\ No newline at end of file