* Fixes for Store Payment Validation
* Tests for Payments
* Use custom validator to ensure payments are made ONLY to payable invoices
* Working on custom payment validators
* Update Client balance
* fixes for client balance
* Fixes for activity API
* 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