Revolut Shopper Unofficial Port troch namakeingo

This is an Unofficial port of Revolut Shopper. All credit and ownership of the extension to Revolut Ltd

NOTE WELL, all code is identical to the Chrome version created and maintained by Revolut Ltd. If you find any issues, please check if it is a Firefox compatibility issue by trying to reproduce on Chrome. If you can reproduce it, please report it ro Revolut. Only report it here if in is strictly reproducible on Firefox.