Rito Client

Enabled push notifications on iPhone with an order alert sound, and more reliable background delivery on devices that restrict background apps. Added 3 new receipt print styles (default / large text / boxed) with bigger, clearer text. Fixed an issue that blocked accepting an order after a driver was assigned, and fixed the test-print button being hidden behind the navigation bar. Supervisor accounts can now assign, change, or unassign a driver from order details. General stability and performance improvements.