Bug 25452: Restore alternate address email display

Bug 25452: Restore alternate address email display

Broken since
  commit 0ab22e1c7c6b6e8d14a4fb7478ab2a3d42da347d
  Bug 18789: Send Koha::Patron object to the templates

Test plan:
Create or modify a patron, fill the "email" field of the "alternate
address" block (B_email)
Go to the detail view of the patron
=> Without this patch the email is not display
=> With this patch applied you see it!

Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>