Adds a textfield and a label to the card, which appear when the card is clicked, to allow the user to assign a value to the card and then to display the card's value thereafter.
Allows the user to submit the value by hitting enter, or by clicking away (switching focus).
Also makes the textfield disappear when focus is lost.
Adds a card list in createDeckPanel that will allow cards to be stored (hopefully).
Jeffrey Signore
Merge branch 'DeckImplementation' of github.com:cs3733bdt/wpi-suite into DeckImplementation