message: truncate long discovered robot names
diff: @@ -70,7 +70,12 @@ h1 {
  }
  .connection_name {
  + width: 12.5rem;
  + overflow: hidden;
  + text-align: center;
  line-height: 3rem;
  + white-space: nowrap;
  + text-overflow: ellipsis;
  }
  .connection_name,
  