Add domain block sending params

app/serializers/rest/admin/domain_block_serializer.rb

@@ -3,6 +3,8 @@
 class REST::Admin::DomainBlockSerializer < ActiveModel::Serializer
   attributes :id, :domain, :created_at, :severity,
              :reject_media, :reject_favourite, :reject_reply, :reject_reports,
+             :reject_send_not_public_searchability, :reject_send_unlisted_dissubscribable,
+             :reject_send_public_unlisted, :reject_send_dissubscribable, :reject_send_media, :reject_send_sensitive, 
              :private_comment, :public_comment, :obfuscate
 
   def id