add post update count to user listing

app/views/users/index.html.erb

@@ -19,6 +19,7 @@
             <th><abbr title="5+ Favorites Binomial Confidence Interval">5+ FBCI</abbr></th>
           <% end %>
           <th>Notes</th>
+          <th>Edits</th>
           <th>Level</th>
           <th>Joined</th>
         </tr>
@@ -44,6 +45,7 @@
               <td><%= number_to_percentage Reports::UserPromotions.confidence_interval_for(user, 5), :precision => 0 %></td>
             <% end %>
             <td><%= link_to user.note_versions.count, note_versions_path(:search => {:updater_id => user.id}) %></td>
+            <td><%= link_to user.post_update_count, post_versions_path(:search => {:updater_id => user.id}) %></td>
             <td><%= user.level_string %></td>
             <td><%= compact_time user.created_at %></td>
           </tr>