LP#1067361: vandelay: batch queue deletion no longer works

Because window.location.reload can trigger before the deletions
have occurred. Simple fix (band aid?) is to make the delete
calls in sync.

Signed-off-by: Mark Cooper <markchristophercooper@gmail.com>
Signed-off-by: Kathy Lussier <klussier@masslnc.org>
Signed-off-by: Ben Shum <bshum@biblio.org>