Update gh-pages to 6e1b6a5e

commit 6e1b6a5e022c67b41805bb3f7e38a0999d02359c
Author: Richard Klancer <rpk@pobox.com>
Date:   Thu Apr 24 16:30:16 2014 -0400

    Land Mgmt: Temporarily partial opacity for plants
    
    [#69731272]
    
    So erosion can be seen underneath

commit fa6959ee17a102c8d7ba8e6ec51447e63bba468e
Author: Richard Klancer <rpk@pobox.com>
Date:   Thu Apr 24 16:26:48 2014 -0400

    Land Mgmt: adjustable vegetation protection
    
    [#69731272]
    
    This is temporary, so good parameters can be found

commit 89f05087d7984d6f07b4d182121005a084cc1871
Author: Richard Klancer <rpk@pobox.com>
Date:   Thu Apr 24 16:24:44 2014 -0400

    Land Mgmt: Put topsoil-count graph in master model