message: Explain topic click stopPropagation
diff: @@ -37,6 +37,12 @@ const RoomDetailRow = React.createClass({
  });
  },
  + onTopicClick: function(ev) {
  + // When clicking a link in the topic, prevent the event being propagated
  + // to `onClick`.
  + ev.stopPropagation();
  + },
  +
  render: function() {
  const BaseAvatar = sdk.getComponent('avatars.BaseAvatar');
  @@ -68,7 +74,7 @@ const RoomDetailRow = React.createClass({
  <div className="mx_RoomDirectory_name">{ name }</div>&nbsp;
  { perms }
  <div className="mx_RoomDirectory_topic"
  - onClick={function(e) { e.stopPropagation(); }}
  + onClick={this.onTopicClick}
  dangerouslySetInnerHTML={{ __html: topic }} />
  <div className="mx_RoomDirectory_alias">{ getDisplayAliasForRoom(room) }</div>
  </td>
  