show raw error msg on web, fix #524, fix #636

web/static/js/language.js

@@ -133,7 +133,7 @@ var postsubmit;
 
 function langreply(langstr) {
     var langobj = languages['content']['reply'][langstr.replace(/[\s,\.\?]*/g,"").toLowerCase()];
-    if ($.type(langobj) == 'undefined') return langobj
+    if ($.type(langobj) == 'undefined') return langstr
     langobj = (langobj[languages['current']] || langobj[languages['default']] || langstr);
     return langobj
 }