* 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
* Performance improvements for seeding
* Differentiating between system notification and user notifications
* Remove hard coded webhook url
* Working on system and user notifications
* notifications
* Set the currency on client if blank
* Refactor for inserting invoice defaults
* Refactor Default Invoice/Quote/Credit objects
* working on credits
* Implement mark_sent for quotes and credits
* Remove unnecessary save() on invoice
* Update copyright
* Working on Credit Repository
* Implement credits as a paymentable entity
* Add credit_id to transformer
* fix rules for update payment
* Fix random deleted_at keys in transformers
* Fix for password_protect check
