Issue #654

Squashed commit of the following:

commit afdeefaf3e342d578c56637137454133d6bffa3b
Author: JD Wong <jdmswong@wormbase.org>
Date:   Wed Mar 20 18:08:39 2013 -0400

    Fixed minor model change, rewired Feature.flanking_sequences a bit.

    Forced flanking sequence view onto one line