anchor.diff:  
         default
           p.medium-gray
  -          span Sign-up error, please contact 
  +          span Sign-up error, please contact
             =" "
             a(href="mailto:support@codecombat.com") support@codecombat.com
             | .
  
positive.code:                 span.glyphicon.glyphicon-ok-circle.class-code-valid-icon
                else
                  span.glyphicon.glyphicon-remove-circle.class-code-valid-icon
          
          .render
            if _.isEmpty(view.signupState.get('classCode'))
              p.medium-gray
  
negative.code:             p.medium-gray
                p.large-gray.classroom-name= view.classroom.get('name')
                br
                if view.classroom.owner
                  if view.classroom.owner.get('firstName')
                    p.medium-gray.teacher-name= view.classroom.owner.get('firstName') + " " + view.classroom.owner.get('lastName')
                  else if view.classroom.owner.get('name')
                    p.medium-gray.teacher-name= view.classroom.owner.get('name')
            else
              p.medium-gray(data-i18n="signup.classroom_not_found")
  
        when 'teacher'
          // TODO
        when 'individual'
  