Added functionality to the SQLConnection class. new method
getListOfOffers() returns a list of products corresponding to the
products on offer. Added offerPrice and savings to the Product class.
The getListOfOffers() method requires the use of a new method called
getSpecificProduct(String cirteria, String value) returns a Product from
a given criteria (i.e. ProductId/Name and value (i.e. 5/Ariel). Tests
passed for this functionality. TO DO: add this list to be displayed in
GUI.