message: Remove border-bottom from room topic
  It gives an empty room topic a height of 1px and does not seem to accomplish much else.
diff: @@ -159,7 +159,6 @@ limitations under the License.
  font-size: $font-13px;
  line-height: $lineHeight;
  max-height: calc($lineHeight * $lines);
  - border-bottom: 1px solid transparent;
  /* to align baseline of topic with room name */
  margin: 4px 7px 0;
  