Bug 7848 - Issues data missing from circulation notices

Bug 7848 - Issues data missing from circulation notices

For the CHECKIN and CHECKOUT notices, any data that is issue specific
does not show. For example, date due.

For CHECKOUT, this is caused not passing in the issues table as part
of the 'table' hash used by C4::Letters::GetPreparedLetter.

For CHECKIN notices, we need the old_issues table instead, as the item
has already been returned.

Signed-off-by: Liz Rea <wizzyrea@gmail.com>
passes tests, correct information shows in notices.

Signed-off-by: Paul Poulain <paul.poulain@biblibre.com>
Signed-off-by: Chris Cormack <chrisc@catalyst.net.nz>