Smarty tweaks and list file attachments

We often have to test receipts and file attachments, and checking the body for attachments is a bit tedious. This MR adds an "Attachments" column so that we can quickly see which emails have attachments.

Ideally I would have made it possible to download the attachment directly from there, but it's more code, and we already have the EML download that works well.

This MR also includes a commit that tweaks the Smarty template:

• fixes an incorrectly close <style tag
• cleanup the ts usage by using crmScope