message: Readded class to height-progress to allow
  referencing the total height as was possible by
  themes in version 2.1.1 (allows fixing the NOX
  and Focus themes).
diff: <ng-container i18n="@@height-of">
  of
  </ng-container>
  + <span class="height-indication__total-height">
  {{ height.total >= 0 ? height.total : '---' }}
  </span>
  + </span>
  </ng-template>
  