Fixes save button validation for editing a game

Starts fixing validation for Save button on New Game Panel when a user
is editing a game. If the fields don't have new information, gray out
the save button.

This only checks for deck change and date change

Author: dbtrue
Save button validation

Author: dbtrue
Adds requirement validation for save button

Verifies requirements are changed for save button when editing a game

Author: ammesonb
Merge branch 'team9dev' into saveButtonFix

Conflicts:
	PlanningPoker/src/edu/wpi/cs/wpisuitetng/modules/planningpoker/view/main/NewGamePanel.java
Adds check for change in maxEstimate

Checks if maxEstimate was changed.

Author: dbtrue
Merge branch 'team9dev' into saveButtonFix
Changes the visibility of the undo button

Undo button's visibility is changed to match that of the save button. If
the user has any changes, the undo button will be visible, but if no
changes were made, the button will be grayed out.

Author: dbtrue
Merge branch 'team9dev' into saveButtonFix
CodePro fixes

CodePro fixes in the files that were worked in previously.

Author: dbtrue
Merge pull request #129 from dbeckwith/saveButtonFix

Save button fix