Merge pull request #27 from ellina-s/ellina

Ellina
More GUI changes

Groundwork for customer transactions
Merge pull request #28 from ellina-s/clark

More GUI changes
Made Clerk transaction that displays the items
Merge pull request #29 from ellina-s/arjan

Made Clerk transaction that displays the items
Now returning item adds back to the current stock
Merge pull request #30 from ellina-s/arjan

Now returning item adds back to the current stock
Fixed dataTransform() and added more columns to String[][]