Closes the tab only if the user chaged the content

Reported-by: bnurbekov
Signed-off-by:Batyrlan Nurbekov <bnurbekov@wpi.edu>
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>
Merge pull request #327 from bnurbekov/sbl-dev

Replaces question marks with "N/A"'s inside of ClosedGameView