Email Templates - Revise 'from' email functionality

[kflemin]

To support multiple jurisdictions with using the email template feature, it will become necessary to allow users to specify the 'from' email that their SEED emails are sent from. (Right now, it is Robin's email address for seedv2 for all emails sent by organizations).

this will require some configurations on AWS directly to add and vet an email address, but we will also need to add an org settings to also specify which email to use for the templates.

• as part of this work, we could also add an org setting to specify which fields to look for the "owner email" in for the "to" email address. Right now it is hardcoded to "Owner Email" canonical field.