fix comparator check (#6499)
fix comparator check (#6499)

coffee: a = not 0 <= b <= 1  converts to (!0 <= b && b <= 1) in js
fixing by adding braces
coffee: a = not (0 <= b <= 1) converts to a = !((0 <= b && b <= 1))
javatlacati/codecombat,javatlacati/codecombat,codecombat/codecombat,codecombat/codecombat,codecombat/codecombat,codecombat/codecombat,javatlacati/codecombat,codecombat/codecombat,javatlacati/codecombat,javatlacati/codecombat