bitbay - improved parse for createOrder (#6119) * [bitbay] fixed fetchMyTrades to allow for extra parameters (such as pagination) to go in the query * [bitbay] fixed fetchMyTrades fee (side used to imply fee currency) * [bitbay] comments * [bitbay] improved response for createOrder * bitbay createOrder edits * bitbay parseTrade ternary fix * bitbay unified parseOrder/createOrder * switch off ticker test for mercado bid <> ask [ci skip]