Implemented the item stock system that separates stockroom summary and detail item stock data.
	Added tables for item stock and item stock details.
	Created the item stock detail entity.
        Updated hibernate mappings for item stock and detail entities.
        Renamed StockRoomItem to ItemStock.
	Updated reference to stock room item to use ItemStock and only work with summary item stock data.
	Updated applyTransactions to create item stock and detail records correctly.
	Added tests for applyTransactions.
	Added stockroom getStockroomItemDetail method and tests.
	Implemented correct ItemStock sorting in service methods.
	(^inv-45, ^inv-47, ^inv-48, ^inv-34, ^inv-50, ^inv-46) Completed
Merge branch 'develop' of github.com:OpenHMIS/openmrs-module-openhmis.inventory into develop