fixed #868
Squashed commit of the following:

commit 0bdf8c25a80731e093fd10dc1d39604fbe187103
Merge: d0363ac 0dc578a
Author: JD Wong <jdmswong@wormbase.org>
Date:   Wed Mar 6 18:22:27 2013 -0500

    Merge branch 'master' into issue-868

commit d0363acb1cebb3f6f6c55e6f4032fc81a14b9402
Author: JD Wong <jdmswong@wormbase.org>
Date:   Fri Mar 1 15:36:45 2013 -0500

    removed date component of previous addresses