add topics

views/topics/topics.etlua

@@ -0,0 +1,16 @@
+<h1>Topics</h1>
+
+<% if #topic_list == 0 then %>
+<p>There are no topics.</p>
+<% else %>
+  <ul>
+  <% for i, v in ipairs(topic_list) do %>
+    <li>
+    <a href=<%= v.slug %>><%= v.name %></a> - <%= v.description %>
+    </li>
+  <% end %>
+<% end %>
+</ul>
+<% if user:is_admin() then %>
+<a href="<%= url_for("topic_create") %>">Create new topic</a>
+<% end %>