Rails update. Fancybox update. Migrations from Paperclip.

db/migrate/20200901000000_create_action_mailbox_tables.action_mailbox.rb

@@ -0,0 +1,14 @@
+# This migration comes from action_mailbox (originally 20180917164000)
+class CreateActionMailboxTables < ActiveRecord::Migration[6.0]
+  def change
+    create_table :action_mailbox_inbound_emails do |t|
+      t.integer :status, default: 0, null: false
+      t.string  :message_id, null: false
+      t.string  :message_checksum, null: false
+
+      t.timestamps
+
+      t.index [ :message_id, :message_checksum ], name: "index_action_mailbox_inbound_emails_uniqueness", unique: true
+    end
+  end
+end