Checks for null errors and continues to work on the observer issue
Merge branch 'dev' of https://github.com/cs3733bdt/wpi-suite into dev

# By Chris Knapp
# Via Chris Knapp
* 'dev' of https://github.com/cs3733bdt/wpi-suite:
  Implement boolean field indicating whether a requirement is finished being voted on or not

Conflicts:
	PlanningPoker/src/edu/wpi/cs/wpisuitetng/modules/planningpoker/models/requirement/Requirement.java