Issue #1272
Included contingency for when variation->Affects is a nonesense gene, but no other information is given.

Squashed commit of the following:

commit 89bfa1a19e5daa53ef9cdd71c3c3f476ae93fb00
Author: JD Wong <jdmswong@wormbase.org>
Date:   Wed Jul 31 14:55:37 2013 -0400

    Included contingency for when variation->Affects is a nonesense gene, but no other information is given.
    Issue #1272