Bug 30600: Fix recall reasons for branch transfers

Bug 30600: Fix recall reasons for branch transfers

When a recall triggers a branch transfer, the reason for the transfer is
'Recall'.

When a transfer is cancelled that was triggered by a recall, depending
on where it is cancelled, will use the 'Manual' or 'CancelRecall'
cancellation reasons.

This patch ensures branchtransfers.cancellation_reason adds 'CancelRecall',
and branchtransfers.reason adds 'Recall' as options.

Sponsored-by: Catalyst IT
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>