Add support for navigator language and userAgent

Author: elliotdavies

src/Web/HTML/Navigator.js

@@ -1,7 +1,19 @@
 "use strict";
 
+exports.language = function (navigator) {
+  return function () {
+    return navigator.language;
+  };
+};
+
 exports.platform = function (navigator) {
   return function () {
     return navigator.platform;
   };
 };
+
+exports.userAgent = function (navigator) {
+  return function () {
+    return navigator.userAgent;
+  };
+};

src/Web/HTML/Navigator.purs

@@ -4,4 +4,8 @@ import Effect (Effect)
 
 foreign import data Navigator :: Type
 
+foreign import language :: Navigator -> Effect String
+
 foreign import platform :: Navigator -> Effect String
+
+foreign import userAgent :: Navigator -> Effect String