The options screen for file renaming currently attempts to set the two options "ascii_filenames" and "windows_compatibility" to inactive, when neither rename nor move files is active. There are two problems with this:

1. The code does not set the initial state correctly, so the options are changeable by the user initially, but when both rename and move files get deactivated then the other options suddenly get grayed out
2. The options are also used for cover art file naming, independent of the renaming or moving of music files.

I hence propose to completely remove this graying out of these two options and instead allow the user to always change them.