message: Allow scrolling right in reply-quoted code block
diff: @@ -78,7 +78,8 @@ limitations under the License.
  // Hack to cut content in <pre> tags too
  .mx_EventTile_pre_container > pre {
  - overflow: hidden;
  + overflow-x: scroll;
  + overflow-y: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  