use table on home page

sourcing/templates/home.html

@@ -1,15 +1,26 @@
 {% include "head.html" %}
 <h1>perma.pub</h1>
 
-<ul>
+<table class="table">
+  <thead>
+    <tr>
+      <th>item</th>
+      <th>type</th>
+      <th>user</th>
+      <th>date</th>
+    </tr>
+  </thead>
+  <tbody>
 {% for doc in docs %}
-<li>
-<a href="{{ doc.url }}">{{ doc.title() }}</a>
-by {{ doc.user.username }}
-&mdash; created {{ doc.created | datetime }}
-</li>
+  <tr>
+    <td><a href="{{ doc.url }}">{{ doc.title() }}</a></td>
+    <td>{{ doc.type }}</td>
+    <td>{{ doc.user.username }}</td>
+    <td>{{ doc.created | datetime }}</td>
+  </tr>
 {% endfor %}
-</ul>
+  </tbody>
+</table>
 
 <p>
 <a href="{{ url_for('.new_sourcedoc') }}" class="btn btn-default">new source document</a>