Use revealing module pattern

ala http://www.adequatelygood.com/JavaScript-Module-Pattern-In-Depth.html

Also made the loadTranslations a bit more robust with more error messaged being logged.

.eslintrc

@@ -99,7 +99,7 @@ rules:
   no-with: 2
   radix: 2
   vars-on-top: 0
-  wrap-iife: 2
+  wrap-iife: 0
   yoda: 0
 
   # Strict

tpl/bootstrap.php

@@ -69,7 +69,7 @@ if ($MARKDOWN):
 <?php
 endif;
 ?>
-		<script type="text/javascript" src="js/privatebin.js?<?php echo rawurlencode($VERSION); ?>" integrity="sha512-CvVHawXqZ6ArGeNCmrYkd9brSbFtb73JfnMzj92d9NzNGRxc2O6nPm2d7CX8pgeughLQ45jfL9gidTktUNxvOQ==" crossorigin="anonymous"></script>
+		<script type="text/javascript" src="js/privatebin.js?<?php echo rawurlencode($VERSION); ?>" crossorigin="anonymous"></script>
 		<!--[if lt IE 10]>
 		<style type="text/css">body {padding-left:60px;padding-right:60px;} #ienotice {display:block;} #oldienotice {display:block;}</style>
 		<![endif]-->