Create a list of organisations (#181)

* Remove errant .DS_Store file

* Ignore .DS_Store

* Create a list of organisations

* Add an org list

* Show number of PIDs per org

* Fix HTML issue, sort orgs by title

* Try and fix the PID count

* Try and fix issues

* Try again to fix issues

* Try yet again to fix issues

* Correct the urlpart

* Change to sort_natural, minor code tidy

* Try and fix the sorting

* Try again to fix the sorting

* Remove debugging

* Add a link to orgs page

_includes/navigation.html

@@ -1,4 +1,5 @@
 <a href="{{ site.baseurl }}/about/">About</a>
 <a href="{{ site.baseurl }}/pids/">All PIDs</a>
+<a href="{{ site.baseurl }}/orgs/">All Orgs</a>
 <a href="{{ site.baseurl }}/howto/">Get a PID</a>
 <a href="{{ site.baseurl }}/faq/">FAQ</a>

_includes/orgtable.html

@@ -0,0 +1,15 @@
+{% include data.html %}
+<table>
+  <thead>
+    <tr><th>Organisation</th><th>Number of PIDs</th></tr>
+  </thead>
+  {% assign sortedorgs = {{site.pages|where:"layout","org"|sort:"title"}} %}
+  {% for org in sortedorgs %}
+    {% assign urlparts = org.url|split:"/" %}
+    {% assign owner = urlparts[2] %}
+    <tr>
+      <th><a href="{{org.url}}">{{org.title}}</a></th>
+      <td>{{ pids | where:"owner",owner | size }}</td>
+    </tr>
+  {% endfor %}
+</table>

orgs.md

@@ -0,0 +1,6 @@
+---
+layout: page
+title: Organisation List
+permalink: /orgs/
+---
+{%include orgtable.html %}