Unzip artpacks on demand, keep zip, drop user in resulting directory, do not unzip again if directory already exists.
Don't display [..] when in ansiRoot directory, even if it does nothing.
Added a disallowedFiles[] array.  Files or directories exactly matching fields in this array will not be openable.
Thanks to access_d for testing and suggesting features & changes, even if he is unprofessional and I hate his face.