message: Allow setting the default HS from the query parameter
  Fixes
diff: @@ -226,6 +226,15 @@ module.exports = React.createClass({
  if (this._teamToken) {
  console.info(`Team token set to ${this._teamToken}`);
  }
  +
  + // Set a default HS with query param `hs_url`
  + const paramHs = this.props.startingFragmentQueryParams.hs_url;
  + if (paramHs) {
  + console.log('Setting register_hs_url ', paramHs);
  + this.setState({
  + register_hs_url: paramHs,
  + });
  + }
  },
  componentDidMount: function() {
  