Fix the title reset bug

www/pad/index.html

@@ -1,6 +1,7 @@
 <!DOCTYPE html>
 <html class="cp pad">
 <head>
+    <title>CryptPad</title>
     <meta content="text/html; charset=utf-8" http-equiv="content-type"/>
     <link rel="icon" type="image/png"
         href="/customize/main-favicon.png"