Always update VC statistics at server start

Statistics is always calculated before storing/updating a VC in the
database. For existing VC, it is done after checking VC-cache as the
cache is used for the statistics calculation.

Change-Id: Ib1de5bf4dd539d16c54c883374eaef8e7280ef04
diff --git a/Changes b/Changes
index beb376b..0719d14 100644
--- a/Changes
+++ b/Changes
@@ -3,7 +3,7 @@
 - Add an exception for missing layer.
 - Use database for querying VC statistics.
 - Fixed statistics conversion.
-
+- Always update VC statistics at server start
 
 # version 1.0