* Improvement - Simplified each order item ID call to speed the query.
* Fix - Blocks for appointments not loading, remove version checking as core supports it.
* Fix - Exporting admin created appointments with tax is wrong.
* Improvement - Hidden input forms don't need a label.
* Improvement - Prevent quantity editing for appointable products.
* Fix - Adding appointment in admin to existing order not working.
* Fix - Adding appointment in admin redirect is wrong.
