Fix invitations responses not being processed

templates/default/invitation.html.ep

@@ -3,14 +3,14 @@
 %= include 'public_toolbar'
 <div class="container-fluid">
   <div class="well publicForm">
-    <form role="form" action="<%= $self->get_url('/invitation') %>" method="post">
+    <form role="form" action="<%= $self->url_for('/invitation') %>" method="post">
       <legend class="text-center">
         <%=l 'INVITATION_RESPONSE' %>
       </legend>
       <p class="text-center">
         <%=l 'CANNOT_JOIN_NOW' %>
       </p>
-      <input name="id" type="hidden" value="<%= $inviteId %>"/>
+      <input name="token" type="hidden" value="<%= $inviteId %>"/>
       <div class="form-group">
         <label for="response">
           <%=l 'WILL_YOU_JOIN' %>