add polls to home page and fix up styles just a little bit

customize.dist/index.html

@@ -68,6 +68,7 @@
         <div id="buttons" class="buttons">
           <a id="create-pad" class="button create" href="/pad/">CREATE NEW WYSIWYG PAD</a>
           <a id="create-code" class="button create" href="/code/">CREATE NEW CODE PAD</a>
+          <a id="create-poll" class="button create" href="/poll/">CREATE NEW POLL</a>
         </div>
       </center>
     </div>