support a 'new account link' to inject new account information onto the login page (#552)

controller/config/config.go

@@ -38,6 +38,7 @@ type Config struct {
 type AdminConfig struct {
 	Secrets         []string `cf:"+secret"`
 	TouLink         string
+	NewAccountLink  string
 	ProfileEndpoint string
 }
 

controller/configuration.go

@@ -26,6 +26,7 @@ func (ch *configurationHandler) Handle(_ metadata.ConfigurationParams) middlewar
 	}
 	if cfg.Admin != nil {
 		data.TouLink = cfg.Admin.TouLink
+		data.NewAccountLink = cfg.Admin.NewAccountLink
 	}
 	if cfg.Invites != nil {
 		data.InviteTokenContact = cfg.Invites.TokenContact