Rearranges GUI and added checkbox so user can select no date
Makes error messages that are resolved when pushing next button not be there when the back button is pressed
Cleans up comments and removes print statements for debugging
Add javadoc comments
Switches the placement of the date picker and the time drop downs
Move deck drop down and label up to match date picker and label
Make a few updates to the GUI layout to prevent errors from overlapping field labels
Merge pull request #50 from TheTeam8s/feature-v2updateCreateGameGUI

Feature v2update create game gui