Finish refactoring src/**/*.js to use import & export

src/config/config.js

@@ -33,7 +33,7 @@
 
 import enums from '../enums.js';
 
-module.exports = {
+export default {
   prefer_hash_algorithm: enums.hash.sha256,
   encryption_cipher: enums.symmetric.aes256,
   compression: enums.compression.zip,

src/config/index.js

@@ -2,5 +2,7 @@
  * @see module:config/config
  * @module config
  */
-import config from './config.js';
-module.exports = config;
+
+'use strict';
+
+export { default } from './config.js';

src/config/localStorage.js

@@ -5,12 +5,10 @@
 
 'use strict';
 
-module.exports = LocalStorage;
-
 /**
  * @constructor
  */
-function LocalStorage() {}
+export default function LocalStorage() {}
 
 /**
  * Reads the config out of the HTML5 local storage