anchor.diff:          thead
             tr
               th=""
  +            th=""
               th user
               th blog
               th table
  
positive.code:         tbody
            if (history)
              each change in history
                tr(onclick="document.getElementById('id_#{change.id}').classList.toggle('hidden');")
                  td
                    a(href='#{layout.htmlroot}/changes/' + change.id)
                      span.glyphicon.glyphicon-info-sign
  
negative.code:                     !{change.htmlDiffText(60)}
                  td=layout.moment(change.timestamp).locale(layout.user.language).format("L")
                if change.property && change.property.substring(0,8)==="markdown"
                  tr(class="class_#{change.id}").hidden
                    td
                    td
                    td(colspan=4).bg-info
  