The fields required for the paypal parser are set as None and don't throw the
ValueError. With this changes we achieve to filter the data and throw the exception
when the fields are required.
TT29944
In English version of the files, paypal uses ',' as thousands separator and '.' as
decimal separator -> the previous code would populate the bank statement with
wrong values without complaining.
We fix this by allowing to configure the separators in the paypal map.
Remove deprecated information in readme
solve issue on currency the main currency is not the first line (line are ordered by currency name). So we should take the journal currency or company currency to know the right currency to use. Also add full header to avoid issue if the paypal header change
