Add email_messages_level and email_digests as updatable user fields

assets/javascripts/discourse/lib/wizard.js.es6

@@ -47,7 +47,9 @@ const userProperties = [
   'website',
   'bio_raw',
   'trust_level',
-  'email_level'
+  'email_level',
+  'email_messages_level',
+  'email_digests'
 ];
 
 const notificationLevels = [

lib/custom_wizard/mapper.rb

@@ -1,7 +1,19 @@
 class CustomWizard::Mapper
   attr_accessor :inputs, :data, :user
   
-  USER_FIELDS = ['name', 'username', 'email', 'date_of_birth', 'title', 'locale', 'trust_level', 'email_level']
+  USER_FIELDS = [
+    'name', 
+    'username', 
+    'email', 
+    'date_of_birth', 
+    'title', 
+    'locale', 
+    'trust_level', 
+    'email_level', 
+    'email_messages_level', 
+    'email_digests'
+  ]
+
   PROFILE_FIELDS = ['location', 'website', 'bio_raw']
   
   def self.user_fields