Additional fields in export CSV

[swallowtail]

I'd like to request please that the export CSV function include the expansion card number.

Currently only Expansion and card name are exported, which means that for swamps etc each line reads (e.g.): Swamp / M14 / 10 - with no way to differentiate between the different swamps that came with M14. Expansion name and card number combined are a unique combination.