Feature Request: WYSIWYG Editor for Templates

[Meatballs1]

Maybe something like https://jejacks0n.github.io/mercury/ could be integrated?

[zeknox]

The challenge that I've seen with many WYSIWYG editors is that if you apply custom CSS to the HTML content it will override the CSS for the rails application. Not sure if there are some editors out there that will render the content within an Iframe to mitigate this, but something I've seen when testing this out.