start the new topics route and view

app/templates/common/topnav.html

@@ -0,0 +1,15 @@
+<nav id="header" class="plank top">
+  <a class="site-title" href=#>Porom</a>
+  <span>anti-social media</span>
+  {%- if is_logged_in() -%}
+  no
+  {%- else -%}
+  <form class="horizontal wrap">
+    <input type="hidden" name="return_to" value="{{request.path}}">
+    <input type="text" placeholder="Username">
+    <input type="password" placeholder="Password">
+    <input type="submit" value="Log in">
+    <a href="#" class="linkbutton">Register</a>
+  </form>
+  {%- endif -%}
+</nav>