runner: quick fix to a bug in UI, during slapgrid run.

This bug makes the display of "Running instance..." 2 times instead of one

slapos/runner/static/js/scripts/process.js

@@ -242,6 +242,7 @@ function setRunningState(data) {
                 if ( $("#running").children('span').length === 0 ) {
                   $("#softrun").removeClass('slapos_run');
                   $("#softrun").addClass('slapos_stop');
+                  if($("[class=instance][id=running_info]").length === 0)
                       $("#running img").before('<p id="running_info" class="instance">Running instance...</p>');
                 }
             }