Blitz getFileSetFiles() and getArchivedFiles() REMOVED

These are not needed as they're covered by getImportedImageFiles()
showOriginalFilePaths() replaces countFilesetFiles() in template
Keeping Blitz image.getArchivedFiles() ** Deprecated **
Add Deprecation warn() to getArchivedFiles()
Merge pull request #778 from will-moore/fs-image-links_cleanup

Fs image links cleanup