APIs for premium. Billing helpers.

src/Sql/dbo/Stored Procedures/User_Update.sql

@@ -18,6 +18,8 @@
     @Premium BIT,
     @Storage BIGINT,
     @MaxStorageGb SMALLINT,
+    @StripeCustomerId VARCHAR(50),
+    @StripeSubscriptionId VARCHAR(50),
     @CreationDate DATETIME2(7),
     @RevisionDate DATETIME2(7)
 AS
@@ -45,6 +47,8 @@ BEGIN
         [Premium] = @Premium,
         [Storage] = @Storage,
         [MaxStorageGb] = @MaxStorageGb,
+        [StripeCustomerId] = @StripeCustomerId,
+        [StripeSubscriptionId] = @StripeSubscriptionId,
         [CreationDate] = @CreationDate,
         [RevisionDate] = @RevisionDate
     WHERE