Make statistics in VC list configurable (default: false)

Default in kustvakt.conf
vc.list.statistics.enabled = false

Change-Id: I685c3a17128129e652de7e639c67e73196fbe4ad
diff --git a/src/main/resources/kustvakt.conf b/src/main/resources/kustvakt.conf
index e45ea32..61cad26 100644
--- a/src/main/resources/kustvakt.conf
+++ b/src/main/resources/kustvakt.conf
@@ -37,6 +37,9 @@
 default.foundry.morphology = marmot
 default.foundry.surface = base
 
+# Virtual corpus and queries
+max.user.persistent.queries = 5
+vc.list.statistics.enabled = false
 
 # Availability regex only support |
 # It should be removed/commented when the data doesn't contain availability field.