fundraise up on the maintenance page

maintenance/maintenance.html

@@ -13,6 +13,14 @@
   <link rel="apple-touch-icon" type="image/png" sizes="180x180" href="static/images/apple-touch-icon-180x180@2x.png">
   <link rel="icon" type="image/png" sizes="196x196" href="static/images/favicon-196x196@2x.png">
   <link rel="shortcut icon" href="static/images/favicon.ico">
+  <!-- Fundraiseup Script -->
+  <script>(function(w,d,s,n,a){if(!w[n]){var l='call,catch,on,once,set,then,track'
+  .split(','),i,o=function(n){return'function'==typeof n?o.l.push([arguments])&&o
+  :function(){return o.l.push([n,arguments])&&o}},t=d.getElementsByTagName(s)[0],
+  j=d.createElement(s);j.async=!0;j.src='https://cdn.fundraiseup.com/widget/'+a;
+  t.parentNode.insertBefore(j,t);o.s=Date.now();o.v=4;o.h=w.location.href;o.l=[];
+  for(i=0;i<7;i++)o[l[i]]=o(l[i]);w[n]=o}
+  })(window,document,'script','FundraiseUp','ADCYPWMX');</script>
   <title>Mozilla Foundation - Under Maintenance</title>
 </head>