message: sort orders by exchange rate
diff: @@ -16,7 +16,7 @@ const filterOrders = (orders, filter) => orders
  ) : (
  `${order.sellCurrency.toLowerCase()}${order.buyCurrency.toLowerCase()}` === filter
  ))
  - .sort((a, b) => Number(b.exchangeRate) - Number(a.exchangeRate))
  + .sort((a, b) => Number(b.buyAmount.dividedBy(b.sellAmount)) - Number(a.buyAmount.dividedBy(a.sellAmount)))
  @connect(({ core: { orders, filter }, ipfs: { isOnline, peer } }) => ({
  orders: filterOrders(orders, filter),
  