anchor.diff:          if($eq activityType 'importCard')
             | {{{_ 'activity-imported' cardLabel list.title sourceLink}}}.
           if($eq activityType 'joinMember')
  -          if($eq currentUser._id member._id)
  +          if($eq user._id member._id)
               | {{_ 'activity-joined' cardLabel}}.
             else
  -            | {{{_ 'activity-added' cardLabel memberLink}}}.
  +            | {{{_ 'activity-added' memberLink cardLabel}}}.
           if($eq activityType 'unjoinMember')
  -          if($eq currentUser._id member._id)
  +          if($eq user._id member._id)
               | {{_ 'activity-unjoined' cardLabel}}.
             else
               | {{{_ 'activity-removed' cardLabel memberLink}}}.
  
positive.code:           | {{{_ 'activity-imported' listLabel boardLabel sourceLink}}}.
  
          if($eq activityType 'joinMember')
            if($eq currentUser._id member._id)
              | {{{_ 'activity-joined' cardLink}}}.
            else
              | {{{_ 'activity-added' memberLink cardLink}}}.
  
negative.code:           | {{{_ 'activity-sent' cardLink boardLabel}}}.
  
          if($eq activityType 'unjoinMember')
            if($eq user._id member._id)
              | {{{_ 'activity-unjoined' cardLink}}}.
            else
              | {{{_ 'activity-removed' memberLink cardLink}}}.
  