E-mail support and email job #23

Use nodemailer to add the ability to send e-mail defined via the .env file through an email.config.js file.

Use an email service for this. Then, create an e-mail job that can send a message using a template.

e.g. we should be able to pass in the message details (to, from, cc, subject) as well as special contents (banner text, array of paragraphs, array of action buttons).

Should include the app_name at the top and bottom, as well as a link to login to Noded.