Improve the top bar and use the font awesome icons in /code

www/poll/index.html

@@ -19,9 +19,10 @@
     <style>
         html, body {
             width: 100;
+            margin-top: 1.25em;
+            height: auto;
         }
         #main {
-            width: 90%;
             margin: auto;
         }
         .clickable {
@@ -38,7 +39,6 @@
 <div id="main">
 
 <div id="toolbar" class="buttons">
-    <sub><a href="/"></a></sub>
 </div>
 <h1 id="mainTitle">CryptPoll</h1>
 <h2 data-localization="poll_subtitle"></h2>