anchor.diff:      class: 'btn btn-danger' %>
     <% end %>
     </div>
  -<% end %>
  +<% end %>
positive.code:           <div class="tabbable">
              <ul class="nav nav-tabs">
                <li class="active"><a href="#date_range" data-toggle="tab">Date Range</a></li>
                <li><a href="#calendar" data-toggle="tab">Calendar</a></li>
              </ul>
  
              <div class="tab-content">
  
negative.code:                 </div>
  
                </div>
                <%# <div id="calendar" class="tab-pane"> %>
                  <%# This will be our calendar view, whenever we add it. See issue #12. %>
                <%# </div> %>
              </div>
              <hr>
            </div>
  