anchor.diff:            span &times;
           h3.modal-title Edit Class Settings
         .modal-body
  -        p This title will be displayed to everyone in the class.
  +        p
  +          strong Title
           p 
             input.edit-name-input(type='text', value="#{instance.name}")
  -        p This description will be displayed to everyone in the class.
  +        p
  +          strong Description
           p 
             textarea.edit-description-input(rows=2)= instance.description
           p Select programming languages available to the class:
  
positive.code:               td #{instance.students.length}
              tr
                td Average level play time:
                td #{stats.averageLevelPlaytime} seconds
              tr
                td Total play time:
                td #{stats.totalPlayTime} seconds
              tr
                td Average levels completed:
                td #{stats.averageLevelsCompleted}
  
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))
  