Adding a cancel account link to the manage page.

close #405

browserid/static/js/pages/manage_account.js

@@ -170,9 +170,9 @@
   }
 
   BrowserID.manageAccount = function() {
-    $('#cancellink').click(function() {
+    $('#cancelAccount').click(function() {
       if (confirm('Are you sure you want to cancel your account?')) {
-        BrowserID.Network.cancelUser(function() {
+        User.cancelUser(function() {
           document.location="/";
         });
       }

browserid/views/index.ejs

@@ -9,7 +9,7 @@
             </div>
             <ul id="emailList">
             </ul>
-            <!-- <div id="disclaimer">You may, at any time, <a href="#">cancel your account</a></div> -->
+            <div id="disclaimer">You may, at any time, <a href="#" id="cancelAccount">cancel your account</a></div>
         </div>
     </div>