have ukko load nntpchan.js

contrib/templates/default/ukko.mustache

@@ -9,7 +9,8 @@
     <title> ukko / overboard </title>
     <meta charset="utf-8" />
     <link rel="stylesheet" href="{{prefix}}static/site.css"></link>
-  </head>
+    <script type="text/javascript" src="{{prefix}}static/nntpchan.js"></script>
+    </head>
   <body>
     <div id="ukko_threads" class="threads_container">
       {{#threads}}