Added ifPropertyExists filter
Moved addAnswer and addGroup functions to parent create state.  Added add buttons to review page.
Fixed poll create api.
Changed the submitPoll state.go() to display.default.
Changed the submitPoll state.go() to display.default.
Removed state.go on review page.
Fixed legend group name bug.  Had to do a shallow copy reverse instead of revering on the referenced array.
Cleaned up d3 chart css.