Add headings

views/admin.erb

@@ -30,14 +30,16 @@
 <table class="table table-striped mb-5">
   <thead>
     <tr>
-      <td></td>
-      <td></td>
+      <th><%= _("Created") %></th>
+      <th><%= _("Expired") %></th>
+      <th><%= _("State") %></th>
     </tr>
   </thead>
   <tbody>
     <% @votes.reverse.each do |vote| %>
       <tr>
         <td><%= format_date(vote.created_at) %></td>
+        <td><%= format_date(vote.expire_on) if vote.expire_on %></td>
         <td class="text-nowrap">
           <% case vote.state
              when 'draft' %>