/users: show vote count, fixes #10

app/views/users/index.html.erb

@@ -14,6 +14,7 @@
       <th>Vote</th>
       <th>Proxy</th>
       <th>Presence</th>
+      <th>Votes</th>
       <th colspan="2"></th>
     </tr>
   </thead>
@@ -30,6 +31,7 @@
         <td><%= user.vote %></td>
         <td><%= user.proxy %></td>
         <td><%= user.presence %></td>
+        <td><%= Vote.where(user_id: user.id).length %></td>
         <!--<td><%= link_to 'Show', user_path(user) %></td>-->
         <td><%= link_to 'Edit', edit_user_path(user) %></td>
         <td><%= link_to 'Destroy', user_path(user), method: :delete, data: { confirm: 'Are you sure you wish to destroy this user?' } %></td>