[Feature Request] Show available and excluded folders on details page

[kennyboy55]

Right now, to check which folders are available (or visible at least to Mail-Archiver) and to check if some are excluded correctly you need to go to the edit page and verify manually that you did not make any typos etc.

I would like to be able to have a list on the details page directly with all the folder, and then color coded green/red if they are archived or excluded.

This image is taken from the edit page, but something like the 'Available Folders' list with colors on the details page would be great.