Fix emulab/emulab-devel#6

www/aptui/template/status.html

 <div class='row'>
   <div class='col-lg-6  col-lg-offset-3
        col-md-8  col-md-offset-2
-       col-sm-10 col-sm-offset-1
+       col-sm-8  col-sm-offset-2
        col-xs-12 col-xs-offset-0'>
     <div class='panel panel-default' id='status_panel'>
       <div class="panel-heading">