+ /**
+ * form a query page for job execution time statistics. The servlet should be
+ * available for users and admins only. By defaults the report time range is
+ * from the earliest day with jobs to today ("Query for all dates" is
+ * ticked). If the user removes the tick the time range is from today - 3
+ * days to today. Currently, the input model is empty.
+ *
+ * @param model
+ * MVC model
+ * @return link to the JSP query page
+ */