Adds a mouse listener to the text field to auto-select all text when textfield is clicked.
Adds the cards panel to a scroll pane for in case the window is at the minimum size, and max number of cards are desired.

Issue: the card panel will sometimes be unnecessarily large (if say there is only 1 card) and the user will be able to scroll for just blank space.
Jeffrey Signore
Adds a dropdown menu to the left half of create game panel that will allow the user to select which deck he wants to use for the game.
This dropdown menu is now only visible when the radio button for using cards is selected.
Adds a temporary action listener that prints out the selected deck, this will need future implementation once decks are stored.
Jeffrey Signore
Adds cancel button class, to be used as having the same functionality as clicking the X in the tab.
Adds this cancel button to the CreateGameLeftHalf panel and the CreateDeckPanel.

Issue: Needs functionality (copy over from X in tabview?)
Jeffrey Signore