Bug 12776: Capitalization: Confirmation messages in circulation

Bug 12776: Capitalization: Confirmation messages in circulation

Changes:
- Yes, renew (Y)
- Yes, check out (Y)
- No, don't check out (N)
- No, don't renew (N)

To test:
- Verify changes by reading the code
- Check out an item that requires confirmation
  Example: Patron owes fines or test with bug 12776.
- Verify confirmation messages show up correctly.
- Check item out again to trigger renewal
- Verify confirmation message shows up correctly.

Signed-off-by: Owen Leonard <oleonard@myacpl.org>
Signed-off-by: Jonathan Druart <jonathan.druart@biblibre.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>