FIX: Don't use `Discourse` global (#66)

FIX: Don’t use Discourse global (#66)

Discourse.SiteSettings should be this.siteSettings.

diff --git a/assets/javascripts/discourse/routes/admin-plugins-discourse-subscriptions-products-show-plans-show.js.es6 b/assets/javascripts/discourse/routes/admin-plugins-discourse-subscriptions-products-show-plans-show.js.es6
index 037477d..0cb3ab7 100644
--- a/assets/javascripts/discourse/routes/admin-plugins-discourse-subscriptions-products-show-plans-show.js.es6
+++ b/assets/javascripts/discourse/routes/admin-plugins-discourse-subscriptions-products-show-plans-show.js.es6
@@ -18,7 +18,7 @@ export default Route.extend({
         interval: "month",
         type: "recurring",
         isRecurring: true,
-        currency: Discourse.SiteSettings.discourse_subscriptions_currency,
+        currency: this.siteSettings.discourse_subscriptions_currency,
         product: product.get("id"),
         metadata: {
           group_name: null,

GitHub sha: 3fb597a4

This commit appears in #66 which was approved by CvX. It was merged by CvX.