[OE-4695] - fix genericAdmin call in OperationBooking
[OEM-258] added method to OphTrOperationbooking_API and wrote a bunch of tests for the class.
[OEM-255] made waiting list letters print using the new PDF system.
[OEM-255] admission letter
[OEM-255] made admission letter/form work with the new PDF printing system.
[OEM-255] refactored a bit
[OEM-255] output buffering is unnecessary here
[OEM-255] use the new wkhtmltopdf margins
Merge branch 'master' into feature/glaucoma-2.1
fixed generic admin
Merge branch 'jira/OEM-258'
updated release
Merge branch 'master' into feature/glaucoma-2.1
Merge branch 'master' into feature/vc
[OEM-279] Fix reschedule comments not being kept on validation failure
[OEM-279] Fix bad assumption
[OE-5125] site added to operation booking view
[OE-5125] site attribute label
[OEM-282] Add "Child health advice" letter warning and ensure hard coded rule types exist
[OE-5240] Fix accessible text in admission form