message: SimpleCell: implement badges
diff: margin-top: 2px;
  }
  +.SimpleCell:not(.SimpleCell--mult) .SimpleCell__content {
  + display: inline-flex;
  + flex-flow: row nowrap;
  + align-content: flex-start;
  + align-items: center;
  + justify-content: flex-start;
  + max-width: 100%;
  +}
  +
  .SimpleCell__children {
  color: inherit;
  text-overflow: ellipsis;
  overflow: hidden;
  }
  +.SimpleCell__badge {
  + flex-grow: 0;
  + flex-shrink: 0;
  + display: inline-flex;
  + flex-flow: row nowrap;
  + align-content: center;
  + align-items: center;
  + justify-content: center;
  + padding-left: 4px;
  +}
  +
  .SimpleCell__indicator {
  color: var(--text_secondary);
  min-width: 0;
  