Unblock new years day for HMP Cardiff
HMP Cardiff New Years day slots afternoon only
Merge pull request #120 from ministryofjustice/cardiff-newyearsday

Cardiff newyearsday
Update staff info for downtime
Merge pull request #121 from ministryofjustice/update_downtime

Update staff info for downtime
Enabled request & visit cancellations via status page
Block processing form when request cancelled
Add cancellation link to visitor emails
Update existing specs for new metrics outcome
Copy updates for cancellation
Supporting specs for cancellation process
Visit controller specs which pass regardless
Supporting specs for cancellations (visit controller)
Visits can be cancelled by following a link in the e-mail the visitor receives.
Update cancellation links for HTML emails
Encrypted parameter for visitor mailer previews
Each link to the status page will now hold state information, making it possible to cancel the visit.
Handle emails received by exiting recipients.
The visit cancellation message to prison contains the date and time.
Cancellation notifications are sent as high-priority e-mails.