* Update client paid to date job:
* Backup Invoice HTML when invoice is marked as sent and paid
* Store HTML of invoice when invoice was paid
* Fix foreign keys in db schema
* V2 Endpoints for Company Migrations
* Fixes for tests
* Fixes for client portal localization
* Replace Invoice Ninja Logo with user defined logo and website URL in client portal
* Minor Fixes
* Refactor for invitations on invoices
* Fixes for settings