adds new controller preparing to add end session on deadline functionality
adding validation to add reqs panel
Merge branch 'dev' into dev-endSessionAfterDeadline
added auto validation to final estimate
added auto validation to final estimate
adding validation to add reqs panel
Adds ending session functionality to PlanningPoker
Merge remote-tracking branch 'origin/dev' into dev-endSessionAfterDeadline

Conflicts:
	PlanningPoker/src/edu/wpi/cs/wpisuitetcw/modules/planningpoker/entitymanagers/PlanningPokerSessionEntityManager.java
added success message to final estimation.
changes entity manager
fixes weird merge issues with something from another branch, now it builds!
leverages in-memory cache SessionStash.java
fixed the save session button, I broke in the previous commit
used ian's suggestion and moved everything to a new thread with a naive implementation
whoops last commit actually didn't have anything in it
added vaildation to create requirements in add requirement panel
fixed bug in previous commit
Adds standard deviation to the GUI.
Create ability to add components to NameDescPanel
Create method to remove the name textbox