message: Exchange: block -> create offer
  Just add conditions for check balance
  On branch fixPostOffers
  Changes to be committed:
  modified:   src/front/shared/pages/Exchange/Exchange.js
diff: @@ -1536,7 +1536,11 @@ export default class Exchange extends Component {
  <FormattedMessage id="partial541" defaultMessage="Exchange now" />
  </Button>
  - <Button styleName="button link-like" onClick={this.createOffer}>
  + <Button styleName="button link-like" onClick={() => {
  + if (balance > 0) {
  + this.createOffer()
  + }
  + }}>
  <FormattedMessage id="orders128" defaultMessage="Create offer" />
  </Button>
  