Fix a bug in the parsing of FlowId after the JSON format for flows
was changed.

Bug fixed by: Masa
diff --git a/web/topology_rest.py b/web/topology_rest.py
index bac3113..5198059 100755
--- a/web/topology_rest.py
+++ b/web/topology_rest.py
@@ -960,7 +960,7 @@
   parsedResult = json.loads(result)
   if len(parsedResult) > 0:
     if parsedResult[-1].has_key('flowId'):
-      flow_nr = int(parsedResult[-1]['flowId'], 16)
+      flow_nr = int(parsedResult[-1]['flowId']['value'], 16)
   else:
     flow_nr = -1  # first flow
     print "first flow"