CSPACE-4330: Changed datatypes for numberOfObjects in CollectionObject records to...

CSPACE-4330: Changed datatypes for numberOfObjects in CollectionObject records to xs:integer (which converts field to bigint type in PostgreSQL) and for objectPurchasePriceValue in Acquisition records to xs:float (double precision in PostgreSQL). Services tests pass, but it would be desirable to add tests for these fields. We may also want to consider xs:decimal type for currency types.