Adding user settings (model and mailer), no form yet

app/models/user.rb

@@ -9,4 +9,8 @@ class User < ApplicationRecord
   scope :prolific, -> { joins('inner join statuses on statuses.account_id = users.account_id').select('users.*, count(statuses.id) as statuses_count').group('users.id').order('statuses_count desc') }
   scope :recent,   -> { order('created_at desc') }
   scope :admins,   -> { where(admin: true) }
+
+  has_settings do |s|
+    s.key :notification_emails, defaults: { follow: true, reblog: true, favourite: true, mention: true }
+  end
 end