made it so zero is a valid vote meaning "not sure" but when calculating
the mean and median the zeros are ignored
commit by: cjwolf
Merge branch 'dev-codonbleu' of https://github.com/zoccihedron/wpi-suite into fix-#182
Merge branch 'dev-codonbleu' of https://github.com/zoccihedron/wpi-suite into fix-#182

Conflicts:
	PlanningPoker/src/edu/wpi/cs/wpisuitetng/modules/planningpoker/view/results/ResultsDisplayPanel.java
removed extra line I added
Merge pull request #197 from zoccihedron/fix-#182

Fix #182