DEGIRO: Match transactions with their fees through the orderId

[Sonlis]

Added

• A check that record and record n+1 share the same order ID.

Fixes

• Transaction fees were matched just checking whether the product is the same, not the order ID. So in reports with multiple transactions with the same product, fees could be linked to the wrong one. Fixes a part of [Degiro exporter v2] Fees are not properly matched to their transaction #41

[dickwolff]

I saw the test failed, but aparently another change I made earlier caused a transaction to not be counted to the total. Will merge this now and look into that test later.