anchor.diff:                <th>Media</th>
                 <th>Address</th>
                 <th>Interval</th>
  -              <th>Rollup Threshold</th>
  +              <th>Summary Mode</th>
  +              <th>Summary Threshold</th>
               </tr>
               <% @contact.media.each_pair do |mk, mv| %>
  +              <% alerting[mk] = @contact.alerting_checks_for_media(mk) %>
                 <tr>
                   <% if 'pagerduty'.eql?(mk) %>
                     <td>PagerDuty</td>
  
positive.code:             <% @entities_and_checks.each do |ec| %>
                <%
                  entity = ec[:entity]
                  checks = ec[:checks]
                 %>
                <tr>
                  <td><a href="/entity/<%= u(entity.name) %>" title="entity status"><%= h entity.name %></a></td>
                  <td>
                    <% checks.each do |check| %>
                      <a href="/check?entity=<%= u(entity.name) %>&amp;check=<%= u(check) %>" title="check status"><%= h check %></a>
                    <% end %>
                  </td>
                </tr>
              <% end %>
  
negative.code:           <h2><%= h @contact.name %></h2>
          </div>
  
          <% alerting = {} %>
  
          <h3>Contact Media</h3>
          <% if !@contact.media || @contact.media.empty? %>
            <p>No media</p>
  