update gh-pages to 1dc3b75e

commit 1dc3b75e1deeacb927a6a2531edeb07d4cb3b361
Author: Richard Klancer <rpk@pobox.com>
Date:   Tue Apr 29 12:23:25 2014 -0400

    Land Mgmt: Simple smoothing of erosion graph
    
    [#70097890]