* Remove backup column from schema
* Add slack webhooks to company user table
* Preview route
* remove json column from company gateway
* fixes for testS
* Fixes for typos
* Ensure payments, invoice and credit amount balance in the validator prior to saving
* additional payment validation rules and tests for processing payments
* Factories for credits
* Tests for payments
* Working on updating a payment
* Working on updating a payment
* fixes for updating a payment
* Working on Payment Tests
* More tests for payments, formrequests
* remove product_key as required from products