Improve subscription and add it to admin app

subscription/urls.py

@@ -0,0 +1,11 @@
+from django.conf.urls import url, include
+
+from subscription.views import *
+
+urlpatterns = [
+    # Subscription views
+    url(r'^subscription/(?P<user_id>[0-9]+)/$', NewSubscription.as_view(), name='subscription'),
+]
+
+
+