Add cache bumping thing to assets

So we could decache stuff on style/JS changes

Author: zoffixznet

template/footer.html

@@ -22,8 +22,8 @@
   </p>
 </footer>
 
-<script type="text/javascript" src="/js/jquery-3.1.1.min.js"></script>
-<script type="text/javascript" src="/js/jquery-ui.min.js"></script>
-<script type="text/javascript" src="/js/search.js"></script>
-<script type="text/javascript" src="/js/jquery.cookie.js"></script>
-<script type="text/javascript" src="/js/main.js"></script>
+<script type="text/javascript" src="/js/jquery-3.1.1.min.js?v=1"></script>
+<script type="text/javascript" src="/js/jquery-ui.min.js?v=1"></script>
+<script type="text/javascript" src="/js/search.js?v=1"></script>
+<script type="text/javascript" src="/js/jquery.cookie.js?v=1"></script>
+<script type="text/javascript" src="/js/main.js?v=1"></script>

template/head.html

@@ -1,6 +1,6 @@
 <meta name=viewport content="width=device-width, initial-scale=1">
 <link rel="icon" href="/favicon.ico" type="image/x-icon" />
-<link type="text/css" href="/css/custom-theme/jquery-ui.css" rel="stylesheet" />
-<link type="text/css" href="/css/pygments.css" rel="stylesheet" />
-<link rel="stylesheet" type="text/css" href="/css/style.css" media="screen" title="default" />
+<link type="text/css" href="/css/custom-theme/jquery-ui.css?v=1" rel="stylesheet" />
+<link type="text/css" href="/css/pygments.css?v=1" rel="stylesheet" />
+<link rel="stylesheet" type="text/css" href="/css/style.css?v=1" media="screen" title="default" />
 <noscript> <style> #search { visibility: hidden; } </style> </noscript>