Hide 'Loading' message once request is done, not on 5 sec timeout.

Applied to every loading message that doesn't show a success/error
feedback message.

js/db_search.js

@@ -138,7 +138,7 @@ $(document).ready(function() {
     $("#db_search_form.ajax").live('submit', function(event) {
         event.preventDefault();
 
-        PMA_ajaxShowMessage(PMA_messages['strSearching']);
+        var msgbox = PMA_ajaxShowMessage(PMA_messages['strSearching']);
         // jQuery object to reuse
         $form = $(this);
 
@@ -166,6 +166,11 @@ $(document).ready(function() {
                 // error message (zero rows)
                 $("#sqlqueryresults").html(response['message']);
             }
+
+            msgbox.clearQueue().fadeOut('medium', function() {
+                $(this).hide();
+            });
+
         })
     })
 }, 'top.frame_content'); // end $(document).ready()