* 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
* Fixes for tests
* add additional fields for company settings
* fixes for travis
* update company settings schema
* Disable client portal
* Client Portal middleware
* Working on client portal
* hide portal
* Implement notification channgels for User and ClientContact models
* Push notifications onto queue
* Force authentication if client portal is password protected