Try to semi-automatically add direction marker in Farsi strings. #601, #530

Author: fred-wang

unpacked/localization/fa/MathML.js

@@ -30,7 +30,7 @@ MathJax.Localization.addTranslation("fa","MathML",{
           UnknownNodeType: "\u0646\u0648\u0639 \u06AF\u0631\u0647\u0654 \u0646\u0627\u0634\u0646\u0627\u062E\u062A\u0647: %1",
           UnexpectedTextNode: "\u06AF\u0631\u0647\u0654 \u0645\u062A\u0646\u06CC \u063A\u06CC\u0631\u0645\u0646\u062A\u0638\u0631\u0647:\u200C %1",
           ErrorParsingMathML: "\u062E\u0637\u0627\u06CC \u062A\u062C\u0632\u06CC\u0647\u0654 MathML",
-          ParsingError: "\u062E\u0637\u0627\u06CC \u062A\u062C\u0632\u06CC\u0647\u0654 MathML: %1",
+          ParsingError: "\u062E\u0637\u0627\u06CC \u062A\u062C\u0632\u06CC\u0647\u0654 MathML\u200F: %1",
           MathMLSingleElement: "MathML \u0628\u0627\u06CC\u062F \u0628\u0647 \u062F\u0646\u0628\u0627\u0644 \u06CC\u06A9 \u0639\u0646\u0635\u0631 \u0648\u0627\u062D\u062F \u0628\u06CC\u0627\u06CC\u062F"
         }
 });

unpacked/localization/fa/TeX.js

@@ -23,6 +23,7 @@
 
 MathJax.Localization.addTranslation("fa",null,{
   menuTitle: "\u0641\u0627\u0631\u0633\u06CC",
+  fontDirection: "rtl",
   version: "2.3",
   isLoaded: true,
   domains: {