Provide a way to adapt custom templates on ISPconfig upgrade
It would be great if on an ispconfig_update the update procedure would show what changed on the original templates files so that the custom template could easily be adapted with the changes too. Similar like you have when upgrading Debian packages and you see the differences between your version of the file and the developers version. See https://www.howtoforge.com/community/threads/autoresponder-start-end-ignored.85929/