[doc][wip] remove legacy bank data field  support from all but initial direct debit. [doc][wip] unify online bank transfer types minor consolidations
[doc][wip] remove legacy bank data field  support from all but initial direct debit.
[doc][wip] unify online bank transfer types
minor consolidations

commercetools/commercetools-payone-integration,commercetools/commercetools-payone-integration