message: [sql lab] allow stoping 'pending' queries
diff: @@ -145,7 +145,7 @@ class SqlEditor extends React.PureComponent {
  this.props.actions.setActiveSouthPaneTab('Results');
  }
  stopQuery() {
  - if (this.props.latestQuery && this.props.latestQuery.state === 'running') {
  + if (this.props.latestQuery && ['running', 'pending'].indexOf(this.props.latestQuery.state) >= 0) {
  this.props.actions.postStopQuery(this.props.latestQuery);
  }
  }
  