Hide batch modify form when there are no query results

[Ryan J Ollos]

The batch modify form is shown when there are no query results, however the Action fieldset is empty and the form can't serve any function.

The proposed change will hide the #batchmod_form when there are no query results.

trac/ticket/templates/query.html

@@ -223 +223 @@
       </form>
 
       <xi:include href="query_results.html" />
-      <xi:include py:if="batch_modify" href="batch_modify.html" />
+      <xi:include py:if="tickets and batch_modify" href="batch_modify.html" />
 
       <div id="trac-report-buttons" class="buttons"
            py:with="edit = report_resource and 'REPORT_MODIFY' in perm(report_resource);