update layout

src/templates/layout.mustache

@@ -2,10 +2,12 @@
 <title>twtxt list{{# title }} - {{ title }}{{/title}}</title>
 <link rel=stylesheet type=text/css href="/css/style.css">
 <div class=page>
-	<h1>{{ header }}</h1>
+  <a href="/"><h1>twtxt list</h1></a>
   <div class=metanav>
-    <a href="/submit">submit</a>
     <a href="/timeline">timeline</a>
+    <a href="/users">users</a>
+    <a href="/submit">submit</a>
   </div>
+  <h2>{{ title }}</h2>
   {{{ body }}}
 </div>