message: added language cookie
diff: angular.module('juiceShop').controller('LanguageController', [
  '$scope',
  + '$cookies',
  '$translate',
  - function ($scope, $translate) {
  + function ($scope, $cookies, $translate) {
  'use strict'
  +
  + if ($cookies.get('language')) {
  + var langKey = $cookies.get('language')
  + $translate.use(langKey)
  + }
  +
  $scope.languages = languages
  $scope.changeLanguage = function (langKey) {
  $translate.use(langKey)
  + $cookies.put('language', langKey)
  }
  }])
  