Upgraded grunt-jscs-checker to version 0.5.

The latest version of JSCS has deprecated the
disallowLeftStickedOperators, disallowRightStickedOperators,
requireRightStickedOperators, and requireLeftStickedOperators options
in favor of the requireSpacesInConditionalExpression,
requireSpaceBeforeBinaryOperators, requireSpaceAfterBinaryOperators,
and disallowSpaceBeforeBinaryOperators options.