message: Add `btn` class back to modal buttons for proper spacing
  Fixes
diff: @@ -7,6 +7,7 @@ import { Provider } from 'react-redux';
  import * as Modal from 'react-modal';
  import * as PropTypes from 'prop-types';
  import { Router } from 'react-router-dom';
  +import * as classNames from 'classnames';
  import store from '../../redux';
  import { ButtonBar } from '../utils/button-bar';
  @@ -63,7 +64,7 @@ export const ModalSubmitFooter: React.SFC<ModalSubmitFooterProps> = ({message, e
  return <ModalFooter inProgress={inProgress} errorMessage={errorMessage} message={message}>
  <button type="button" onClick={onCancelClick} className="btn btn-default">Cancel</button>
  - <button type="submit" className={submitButtonClass} disabled={submitDisabled} id="confirm-action">{submitText}</button>
  + <button type="submit" className={classNames('btn', submitButtonClass)} disabled={submitDisabled} id="confirm-action">{submitText}</button>
  </ModalFooter>;
  };
  