Task2 corrections.
Merge branch 'master' of https://github.com/Slicey4/homework_6

Conflicts:
	task2/bin/ee/ut/math/tvt/salessystem/domain/controller/impl/SalesDomainControllerImpl.class
	task2/bin/ee/ut/math/tvt/salessystem/ui/model/PurchaseHistoryTableModel.class
	task2/bin/ee/ut/math/tvt/salessystem/ui/model/PurchaseInfoTableModel.class
	task2/bin/ee/ut/math/tvt/salessystem/ui/model/StockTableModel.class