Add /runner/:name endpoint

templates/runner.html

@@ -0,0 +1,14 @@
+{% extends "base.html" %}
+
+{% block title %}{{ name }}{% endblock %}
+
+{% block body %}
+<h2>Runner</h2>
+<div class="runner">
+    <span class="name">runner {{ name }}</span>
+    <dl>
+        <dt>Last seen:</dt>
+        <dd>{{ last_seen }}</dd>
+    </dl>
+</div>
+{% endblock %}