Hi all,
after long time searching for the best and easy way to edit my configuration files i came up with Cloud9 wich is
Web based IDE that allows you ato Edit, Upload, Download configuration files, test your python scripts, run bash command and much more.
I wrote an article to help you set this up.
There is already a Addon for hassio. Sadly it droped support for ARM. So it does not work with a pi anymore. Only the older versions will work as you can read here: Community Hass.io Add-on: IDE, based on Cloud9