PaymentPanel as a class
Merge branch 'master' of https://github.com/StenM/Helmut.git
late changes
Merge branch 'master' of https://github.com/StenM/Helmut.git

Conflicts:
	POS/src/ee/ut/math/tvt/salessystem/ui/tabs/HistoryTab.java
	POS/src/ee/ut/math/tvt/salessystem/ui/tabs/PurchaseTab.java