1.6 had a plugin for this, is there one available for 1.8? I can't seem to find it if so.
It's useful for visibility and discussion of the warning.
I don't believe so. Can you link to 1.6 version? Should be relatively simple to update.
I can't seem to find it online anymore. I extracted this from 1 of my 1.6 boards:
https://www.sendspace.com/file/581d25
I couldn't locate any other files; root file, language file. Just the plugin DIR file.