message: up metamask network check in order checks
diff: @@ -1702,6 +1702,7 @@ class Exchange extends PureComponent<ExchangeProps, ExchangeState> {
  const canStartSwap =
  !isErrorExternalDisabled &&
  + isCorrectMetamaskNetwork &&
  linked.haveAmount.value > 0 &&
  fromAddress &&
  isFromAddressReady &&
  @@ -1711,11 +1712,11 @@ class Exchange extends PureComponent<ExchangeProps, ExchangeState> {
  !this.doesComissionPreventThisOrder() &&
  isBalanceReady &&
  new BigNumber(getAmount).isGreaterThan(0) &&
  - isCorrectMetamaskNetwork &&
  !isWaitForPeerAnswer
  const getTextWhyCanNotStartSwap = () => {
  if (isErrorExternalDisabled) return <FormattedMessage id="swapDisabled" defaultMessage='Swap Disabled' />
  + if (!isCorrectMetamaskNetwork) return <FormattedMessage id="incorrectMetamaskNetwork" defaultMessage='Please choose correct metamask network' />
  if (!(linked.haveAmount.value > 0)) return <FormattedMessage id="enterYouSend" defaultMessage='Enter "You send" amount' />
  if (!fromAddress) return <FormattedMessage id="selectFromAddress" defaultMessage='Select "From address"' />
  if (!isFromAddressReady) {
  @@ -1743,7 +1744,6 @@ class Exchange extends PureComponent<ExchangeProps, ExchangeState> {
  return <FormattedMessage id="enterLesserAmount" defaultMessage='Enter lesser amount to "You send"' />
  }
  if (!(new BigNumber(getAmount).isGreaterThan(0))) return <FormattedMessage id="errorWithGetAmount" defaultMessage='"You get" no more than 0' />
  - if (!isCorrectMetamaskNetwork) return <FormattedMessage id="incorrectMetamaskNetwork" defaultMessage='Please choose correct metamask network' />
  if (isWaitForPeerAnswer) return <FormattedMessage id="waitPeerAnswer" defaultMessage='Wait peer answer' />
  return <FormattedMessage id="contactSupport" defaultMessage='Please contact support' />
  