Send user to hosted recurly billing-details page.

And remove our update-billing-details form, the APIs for which will be
deprecated soon.

services/web/app/coffee/Features/Subscription/SubscriptionController.coffee

@@ -127,24 +127,32 @@ module.exports = SubscriptionController =
 
 	editBillingDetailsPage: (req, res, next) ->
 		user = AuthenticationController.getSessionUser(req)
-		LimitationsManager.userHasSubscription user, (err, hasSubscription)->
+		LimitationsManager.userHasSubscription user, (err, hasSubscription, subscription)->
 			return next(err) if err?
 			if !hasSubscription
 				res.redirect "/user/subscription"
 			else
-				RecurlyWrapper.sign {
-					account_code: user._id
-				}, (error, signature) ->
-					return next(error) if error?
-					res.render "subscriptions/edit-billing-details",
-						title      : "update_billing_details"
-						recurlyConfig: JSON.stringify
-							currency: "USD"
-							subdomain: Settings.apis.recurly.subdomain
-						signature  : signature
-						successURL : "#{Settings.siteUrl}/user/subscription/billing-details/update"
-						user       :
-							id : user._id
+				RecurlyWrapper.getSubscription subscription.recurlySubscription_id,
+					includeAccount: true,
+					(err, usersSubscription)->
+						account = usersSubscription.account
+						hostedLoginToken = account.hosted_login_token
+						if !hostedLoginToken
+							err = new Error('no hosted_login_token on recurly account')
+							return next(err)
+						subdomain = Settings?.apis?.recurly?.subdomain
+						if !subdomain
+							err = new Error('recurly subdomain not configured')
+							return next(err)
+						link = "https://" +
+							subdomain +
+							".recurly.com/account/billing_info/edit?ht=" +
+							hostedLoginToken
+						res.render "subscriptions/edit-billing-details",
+							title: "update_billing_details"
+							hostedBillingDetailsPageLink: link
+							user:
+								id: user._id
 
 	updateBillingDetails: (req, res, next) ->
 		res.redirect "/user/subscription?saved_billing_details=true"

services/web/app/views/subscriptions/edit-billing-details.pug

@@ -1,7 +1,5 @@
 extends ../layout
 
-block scripts
-	script(src=buildJsPath('libs/recurly.min.js', {fingerprint:false}))
 
 block content
 	.content.content-alt
@@ -11,17 +9,8 @@ block content
 					.card
 						.page-header
 							h1.text-centered #{translate("update_your_billing_details")}
-						#billingDetailsForm #{translate("loading_billing_form")}...
-	
-
-	script(type="text/javascript").
-		Recurly.config(!{recurlyConfig})
-		Recurly.buildBillingInfoUpdateForm({
-			target      : "#billingDetailsForm",
-			successURL  : "#{successURL}?_csrf=#{csrfToken}&origin=editBillingDetails",
-			signature   : "!{signature}",
-			accountCode : "#{user.id}"
-		});
-
-
-
+						div.text-center
+							a.btn.btn-primary.btn-lg(
+								href=hostedBillingDetailsPageLink
+								target="_blank"
+							) #{translate('open_your_billing_details_page')}