message: style: emphasize roster item with unread msg
diff: }
  &--has-unread-msg {
  - .jsxc-bar__caption__secondary::before {
  + .jsxc-bar__caption {
  + font-weight: bold;
  + }
  +
  + .jsxc-bar__caption__secondary {
  + font-style: italic;
  +
  + &::before {
  background-color: $unread-bg;
  border-radius: 50%;
  color: $unread-color;
  width: 0.8em;
  }
  }
  + }
  &--window {
  background-color: $window-bar-bg;
  