show report title (in print) only if corresponding flag in report instance is set

loops/expert/browser/report.pt

@@ -38,6 +38,7 @@
 
 <div metal:define-macro="header">
     <h1 class="print-only"
+        tal:condition="report/show_report_title|nothing"
         tal:content="report/context/title" />
     <metal:block use-macro="view/concept_macros/concepttitle" />
     <form method="get" name="report_data" class="report-meta noprint">

loops/organize/work/report.py

@@ -277,6 +277,7 @@ class WorkReportInstance(ReportInstance):
 
     type = "work_statement"
     label = u'Work Statement'
+    show_report_title = True
 
     rowFactory = WorkRow