Bug 3150: Move emails for sending cart and list contents to notices

Bug 3150: Move emails for sending cart and list contents to notices

This patch creates notices using Template Toolkit syntax for sending
emails containing cart and list contents.

To test:
1. Apply Bug 27266
2. Run update database and restart services
3. In the staff client, add multiple items to your cart and to a list
4. Go to your cart and click Send to email the contents
5. Add an email and a comment and click Send
6. Confirm the information shown in the success message is correct
7. In your terminal, log into the database. View the message queue ( i.e. select * from message_queue; ). Confirm that your email has been queued and the content is all correct. Confirm the cart contents has been included as an attachment.
8. Go to your list and click Send list to email the contents
9. Repeat steps 5-7
10. Log into the OPAC
11. Add multiple items to your cart and to a list
12. Repeat steps 4-9
13. By the end, you should have four emails in your message queue. All
of the data about the items should be correct, they should all have
attachments, and be addressed to the correct email address.

Sponsored-by: Bibliotheksservice-Zentrum Baden-Württemberg (BSZ)
Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>