JSCS: Add "disallowSpacesInFunctionDeclaration"

Valid:

    function a() {}

Invalid:

    function a () {}

js/.jscsrc

@@ -8,6 +8,7 @@
   "disallowSpaceAfterPrefixUnaryOperators": ["++", "--", "+", "-", "~", "!"],
   "disallowSpaceBeforeBinaryOperators": [","],
   "disallowSpaceBeforePostfixUnaryOperators": ["++", "--"],
+  "disallowSpacesInFunctionDeclaration": { "beforeOpeningRoundBrace": true },
   "disallowSpacesInNamedFunctionExpression": { "beforeOpeningRoundBrace": true },
   "disallowSpacesInsideArrayBrackets": true,
   "disallowSpacesInsideParentheses": true,