Added Russian and Turkey currencies

According to Russian Rubles and Turkish Lire are now available:

https://developer.paypal.com/docs/classic/api/currency_codes/
https://developer.paypal.com/docs/classic/api/country_codes/

web repo also needs to be updated, so taking care of that in a separate repo (not completely sure if I've found all things which need to be added there), but I am guessing this is all that needs to be done for this repo?