Updated fuel prices, CO2 price and dollar_to_euro conversion.

All prices updated globally. This changes the country.ad files as well as the carrier.ad files. Sources for price and cost updates are listed in: 20140626_Energy Carriers price update_fix crude oil energy content_NL.xls and 140626_energy carriers price update data.xls. These have not been made public yet on etdataset, but should be soon.