workflows: don't break on quotation marks in status names (#11493)

wcs/admin/workflows.py

@@ -137,7 +137,7 @@ def graphviz(workflow, url_prefix='', select=None, svg=True,
     for status in workflow.possible_status:
         i = status.id
         print >>out, 'status%s' % i,
-        print >>out, '[label="%s"' % status.name,
+        print >>out, '[label="%s"' % status.name.replace('"', "'"),
         if select == str(i):
             print >>out, ',id=current_status'
         if status.colour: