Prevent relogging after logout (bug 803316)

mkt/account/templates/account/settings.html

@@ -66,7 +66,7 @@
       <footer class="form-footer">
         <button type="submit">{{ _('Save Changes') }}</button>
         <div class="extras">
-          <a href="{{ url('users.logout') }}" class="post logout">
+          <a href="{{ url('users.logout') }}" class="sync post logout">
             {{ _('Log out') }}
           </a>
         </div>