Fix PriceCurrency in FXCM order events
Fix PriceCurrency in FXCM order events

When creating order fill events, the value of the PriceCurrency property was being set equal to the base currency instead of the quote currency.
Currently this property is only used for display purposes.

AlexCatarino/Lean,jameschch/Lean,StefanoRaggi/Lean,AlexCatarino/Lean,QuantConnect/Lean,jameschch/Lean,AlexCatarino/Lean,QuantConnect/Lean,QuantConnect/Lean,JKarathiya/Lean,jameschch/Lean,StefanoRaggi/Lean,StefanoRaggi/Lean,JKarathiya/Lean,StefanoRaggi/Lean,jameschch/Lean,StefanoRaggi/Lean,jameschch/Lean,AlexCatarino/Lean,JKarathiya/Lean,QuantConnect/Lean,JKarathiya/Lean