Add back in subscriptionType ping param...

src/classes/Metrics.js

@@ -257,7 +257,8 @@ class Metrics {
 			this._buildQueryPair('id', conf.install_date) +
 			// Showing campaign messages (former show_cmp)
 			this._buildQueryPair('sc', conf.show_cmp ? '1' : '0') +
-			// Subscription Typerics._getSubscriptionType().toString()) +
+			// Subscription Type
+			this._buildQueryPair('st', Metrics._getSubscriptionType().toString()) +
 
 			// New parameters for Ghostery 8.5.2
 			// Subscription Interval