Bug 19304: Move C4::Members::GetNoticeEmailAddress to Koha::Patron->notice_email_address

Bug 19304: Move C4::Members::GetNoticeEmailAddress to Koha::Patron->notice_email_address

This subroutine is quite trivial and can be replaced easily with a new
method of Koha::Patron

Test plan:
Overdue notices and shelf sharing must be send the to an email address,
according to the value of the pref AutoEmailPrimaryAddress

Signed-off-by: David Bourgault <david.bourgault@inlibro.com>
Signed-off-by: Josef Moravec <josef.moravec@gmail.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>