* DRY font-family declarations
* Add email.less, inline styles using premailer
* min-width 100% for mobile email clients
* Emails without header have default 100% width (like before)
* Include email.css for all apps
* Keep !important declarations
* Add test case for inlining css
* Ignore important rules in css
* minor
* inline images working, ability to use template name for emails
* Extract header into separate file
* Remove erp-logo
* minor refactor
* [minor] codacy
* fix for test
* Add test case for email body
* remove unused imports
* Add more tests for email body