Add scheduler output skeleton.

app/templates/scheduler/index.html.j2

@@ -2,6 +2,25 @@
 
 {% block page_content %}
 <div class="col s12">
+  <div class="card">
+    <div class="card-content">
+      <span class="card-title">All jobs</span>
+      <table>
+        <thead>
+          <tr>
+            <th>creator</th>
+            <th>files</th>
+            <th>service</th>
+            <th>service_args</th>
+            <th>status</th>
+          </tr>
+        </thead>
 
+        <tbody>
+
+        </tbody>
+      </table>
+    </div>
+  </div>
 </div>
 {% endblock %}