Sneaking in another small change which clears up output column when the query is running.

git-svn-id: https://asterixdb.googlecode.com/svn/branches/asterix_stabilization_api_cleanup@1495 eaa15691-b419-025a-1212-ee371bd00084
diff --git a/asterix-app/src/main/resources/webui/querytemplate.html b/asterix-app/src/main/resources/webui/querytemplate.html
index 89e047f..95323bb 100644
--- a/asterix-app/src/main/resources/webui/querytemplate.html
+++ b/asterix-app/src/main/resources/webui/querytemplate.html
@@ -16,6 +16,7 @@
 <script type="text/javascript">
 $(document).ready(function(){
    $("form#queryform").submit(function() {
+     $('#output-message').html("");
      $.post("/", $("form#queryform").serialize(), function(data) {
        $('#output-message').html(data);
      });