the stock feature of the gui has been successfully connected however I have
noticed a few noteable problems as I was doing this.
Note: their is no Genre in the DVD  database stock table.
also there is no DVD year or dvd rent fee in the Stock gui class.
There needs to be a employee login and a place to pass in the username and
passwords in the gui.
Id is autoincremented in the database so there is no need for a text field
for this function at least.
Lastly there needs to be a textfield to add in the rental fee.