Bruji

all fields with prices are problematic e. g. in countries of the european union with have introduced the Euro instead their former currencies.

Therefor some improvements should be made imho:
it should be possible
- to insert different currencies in the same field
- to set the exchange rates in the preferences
- to set the prefered currency to be displayed in statistics
- to set if e. g. "€" is shown in the statistics or "Euro" or "EUR" or no unit at all
- to set if a dot or a comma is displayed before the decimals

maybe I forgot some more details to make this perfectly working.