0.8dev: Apply [trac 12245] to the `bh_query.html` !BloodhoundTheme template. Refs #712.

The //Batch Modify// section is hidden when there are no tickets in the query results.


git-svn-id: https://svn.apache.org/repos/asf/bloodhound/trunk@1541756 13f79535-47bb-0310-9956-ffa450edef68