* Minor fixes for user delete
* Working on notifications
* Refactor for notifications
* Fix for checking settings withe negative integers
* Set payment id to 0
* Move pdf download to client side routes
* fixes for company_user
* Fixes for company_user
* Testing Company Ledger
* Fixes for company ledger
* Fixes for company ledger
* Company ledger testS
* Fixes for user / client / contacts transformers
* Fixes for tests
* Fixes for tokens
* 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
* Set default templates in Company Settings
* Working on Company User creation
* Working on company_user relationship
* Fixes for company_user relation
* Clean up
* fix regression in company name
* HasOneThrough for company user
* Validation rules for contact email addresses
* Force a blank contact if no contacts passed in client
