message: Block button if no many
diff: @@ -1526,6 +1526,7 @@ export default class Exchange extends Component {
  <div styleName="buttons">
  + {/* Exchange */}
  <Button
  className="data-tut-Exchange_tourDisabled"
  styleName="button"
  @@ -1535,12 +1536,12 @@ export default class Exchange extends Component {
  >
  <FormattedMessage id="partial541" defaultMessage="Exchange now" />
  </Button>
  -
  - <Button styleName="button link-like" onClick={() => {
  - if (balance > 0) {
  - this.createOffer()
  - }
  - }}>
  + {/* Creates offer */}
  + <Button
  + styleName="button link-like"
  + onClick={ balance > 0 ? this.createOffer : null}
  + disabled={!balance > 0}
  + >
  <FormattedMessage id="orders128" defaultMessage="Create offer" />
  </Button>
  