Closes the tab only if the user chaged the content

Reported-by: bnurbekov
Signed-off-by:Batyrlan Nurbekov <bnurbekov@wpi.edu>
Fix the bug that makes the program freeze when the user click the “All game" in the tree with no game in it.

Reported-by: hlong290494
Signed-off by: Long Nguyen Duc Hoang <lhnguyenduc@wpi.edu>
Merge pull request #325 from sfmailand/sbl-dev

Moderator buttons
Remove duplicate isViewHasBeenEdited() in CreateGameView.java introduced by @bnurbekov
Merge branch 'sbl-dev' of git://github.com/struct-by-lightning/wpi-suite into sbl-dev

Conflicts:
	PlanningPoker/src/edu/wpi/cs/wpisuitetng/modules/PlanningPoker/view/ClosableTabComponent.java
Replaces question marks with "N/A"'s insside of the ClosedGameView

Reported-by: bnurbekov
Signed-off-by: Batyrlan Nurbekov <bnurbekov@wpi.edu>
Change the JList user votes of the ClosedGameView into Table.

Reported-by: hlong290494
Signed-off by: Long Nguyen Duc Hoang <lhnguyenduc@wpi.edu>
Merge pull request #327 from bnurbekov/sbl-dev

Replaces question marks with "N/A"'s inside of ClosedGameView
Merge pull request #329 from bbiletch/fix-duplicate-isviewhasbeenedited

Remove duplicate isViewHasBeenEdited() in CreateGameView.java introduced by @bnurbekov
Merge pull request #328 from hlong290494/guiTableVote

Change the JList user votes of the ClosedGameView into Table.
Merge pull request #324 from hlong290494/freezeGameBug

Freeze gameTree when the database is empty.