* Add setting fields to model
* Allow to configure SMTP settings
* Normalize locales
* Cleanup locales
* Remove 'coming soon'
* fix test
* Reset credentials
* Reset development config
* Check smtp spelling
* Use post instead of get method
* TLS ENV variable is more descriptive
* Rework application mailer
* Follow rails convention for mailer action params
* Reset schema.rb to main
* Test WIP
* Add test for controller and mailer
* Move tests from controller to model
* Custom error message if settings are not all present
* Comment smtp config in development env
* Add default tls enabled value
* Rubocop
* Fix controller test
* Reset credentials
* Normalize locales
* Test
* fix test
* Fix application mailer test that fails randomly
* Error flash message instead of notice
* Rework application mailer tests
