anchor.diff:    </thead>
     <thead>
       <tr>
  -      <th colspan="4"><h4>Active meters</h4></th>
  +      <th colspan="4">Active meters</th>
       </tr>
     </thead>
     <tbody>
  
positive.code:           <td><%= meter.meter_type.humanize %></td>
            <td>
              <div class="btn-group">
                <%= link_to 'Edit', edit_school_meter_path(@school, meter), class: 'btn btn-warning' %>
                <%= link_to 'Deactivate', deactivate_school_meter_path(@school, meter), method: :put, class: 'btn btn-secondary' %>
              </div>
            </td>
          </tr>
  
negative.code:   <% if @inactive_meters.any? %>
      <thead>
        <tr>
          <th colspan="4">Inactive meters</th>
        </tr>
      </thead>
      <tbody>
  