Plans, subscriptions

* Plans controller
* Subscription controller
* Clean admin controller
* Ember Plans route
* Index page
* New Plans
* Translations

app/controllers/admin/plans_controller.rb

@@ -0,0 +1,13 @@
+# frozen_string_literal: true
+
+module DiscoursePatrons
+  class PlansController < ::Admin::AdminController
+    def index
+      head 204
+    end
+
+    def show
+      head 204
+    end
+  end
+end

app/controllers/admin/subscriptions_controller.rb

@@ -3,7 +3,11 @@
 module DiscoursePatrons
   class SubscriptionsController < ::Admin::AdminController
     def index
-      head 200
+      ::Stripe.api_key = SiteSetting.discourse_patrons_secret_key
+
+      subscriptions = ::Stripe::Subscription.list
+
+      subscriptions.to_json
     end
   end
 end

app/controllers/admin_controller.rb

@@ -8,10 +8,6 @@ module DiscoursePatrons
       render_serialized(payments, PaymentSerializer)
     end
 
-    def subscriptions
-      head 200
-    end
-
     private
 
     def payments_order