switch tidy to mtime instead of atime, and rm empty dirs
switch tidy to mtime instead of atime, and rm empty dirs

sebbASF/infrastructure-puppet,sebbASF/infrastructure-puppet,apache/infrastructure-puppet,sebbASF/infrastructure-puppet,sebbASF/infrastructure-puppet,sebbASF/infrastructure-puppet,sebbASF/infrastructure-puppet,sebbASF/infrastructure-puppet,sebbASF/infrastructure-puppet,apache/infrastructure-puppet,apache/infrastructure-puppet,apache/infrastructure-puppet,apache/infrastructure-puppet,apache/infrastructure-puppet,apache/infrastructure-puppet