Calculates the value of production of individual livestock categories
Arguments
- other
boolean: should FAO livestock categories that can't be matched to MAgPIE categories (i.e. beeswax, wool, silkworms, and honey) be reported as "livst_other"?
- fillGaps
boolean: should gaps be filled using production * prices (where production data is available)?
- unit
output currency unit based on the toolConvertGDP function from the GDPuc library