WooCommerce Bookings 2.1.9

* Fix - Fix issue with quotes translations on default email subjects.
* Tweak - Add a filter for the admin view order URL (Product Vendor compatibility).

* Add - Add customer name to monthly and daily view on the calendar.
* Fix - JavaScript ".map is not a function" error on calendar load.
* Fix - Fatal error on backend Calendar on a booking whose bookable product was deleted.
* Fix - Fix integration with Deposits when the order is manually set to partially paid.
* Tweak - Enlarge clickable area in Month/Day Calendar booking blocks.
* Tweak - WC 4.0 compatibility.
* Fix - Add filter for resource duration display on booking form.

* Fix - Confirmation required product gives fatal error when non-bookable product is added to cart.
* Fix - Combine admin notices on bookings removed due to inactivity.
* Tweak - Remove legacy code.