checks for null

Adding a check for null if told to add a null requirement.

Author: Shockolate
Formatting changes

Formats text cntrl-shift-f

Author:Shockolate
Merge pull request #150 from dbeckwith/BugFix-AddRequirement

Bug fix add requirement
Merge branch 'team9dev' into helpTutorial

Conflicts:
	PlanningPoker/src/edu/wpi/cs/wpisuitetng/modules/planningpoker/view/main/NewGameRequirementsPanel.java