Since predicate could match any property, the transformation corresponding to a line might
change upon the change of any property. Make sure the interaction take into account any property

Let's use reference_date_method_id on Trade Model Paths.

* Code clean up
* Remove hardcoded ledger to pick date
* Add code to defined source section when none is defined

* Fix for special case where purchase packing list is root.

* Use getSourceAssetPriceCurrency
* Do not expand if no SourceAssetPrice