Add inviter and time to admin invitations list

app/views/admin/invitations/index.html.erb

@@ -17,6 +17,7 @@
           <tr>
             <th>Token</th>
             <th>Accepted</th>
+            <th>Inviter</th>
             <th>Invited user</th>
           </tr>
         </thead>
@@ -24,7 +25,8 @@
           <% @invitations_used.each do |invitation| %>
             <tr>
               <td class="overflow-ellipsis font-mono"><%= invitation.token %></td>
-              <td><%= invitation.used_at.strftime("%Y-%m-%d") %></td>
+              <td><%= invitation.used_at.strftime("%Y-%m-%d (%H:%M UTC)") %></td>
+              <td><%= invitation.user.address %></td>
               <td><%= User.find(invitation.invited_user_id).address %></td>
             </tr>
           <% end %>