add pdf generation

app/models/encrypted_config.rb

@@ -23,6 +23,7 @@
 class EncryptedConfig < ApplicationRecord
   FILES_STORAGE_KEY = 'active_storage'
   EMAIL_SMTP_KEY = 'action_mailer_smtp'
+  ESIGN_CERTS_KEY = 'esign_certs'
 
   belongs_to :account
 

app/models/submission.rb

@@ -40,8 +40,6 @@ class Submission < ApplicationRecord
   has_many_attached :documents
 
   has_many_attached :attachments
-  has_many_attached :images
-  has_many_attached :signatures
 
   scope :active, -> { where(deleted_at: nil) }
 end