set USD as default for trade params even when currecny is not set
set USD as default for trade params even when currecny is not set

nazaninreihani/binary-next-gen,binary-com/binary-next-gen,binary-com/binary-next-gen,binary-com/binary-next-gen,nazaninreihani/binary-next-gen,nazaninreihani/binary-next-gen