Move translator file into helpers folder

common/script/content/translation.js

@@ -1,21 +0,0 @@
-'use strict';
-
-require('coffee-script');
-var i18n = require('../i18n.coffee');
-
-var t = function(string, vars) {
-  var func = function(lang) {
-    if (vars == null) {
-      vars = {
-        a: 'a'
-      };
-    }
-    return i18n.t(string, vars, lang);
-  };
-
-  func.i18nLangFunc = true; // Trick to recognize this type of function
-
-  return func;
-};
-
-module.exports = t;