anchor.diff:                td #{instance.students.length}
               tr
                 td Average level play time:
  -              td #{stats.averageLevelPlaytime} seconds
  +              td= moment.duration(stats.averageLevelPlaytime, "seconds").humanize()
               tr
                 td Total play time:
  -              td #{stats.totalPlayTime} seconds
  +              td= moment.duration(stats.totalPlayTime, "seconds").humanize()
               tr
                 td Average levels completed:
                 td #{stats.averageLevelsCompleted}
  
positive.code:               td Total levels completed:
                td #{stats.totalLevelsCompleted}
              tr
                td Last level completed:
                td #{stats.lastLevelCompleted}
          .col-md-6
            h3 Concepts Covered
  
negative.code:                         div
                            - var playTime = Math.round(Math.random() * 600)
                            span Time to solve
                            span : #{moment.duration(playTime, "seconds").humanize()}
                          div
                            - var completionDate = new Date()
                            - completionDate.setUTCDate(completionDate.getUTCDate() - Math.round(Math.random() * 60))
  