Request: "Update Formation of the Super-Structures on the Inactive X"

@bgruening @nilchia and @pavanvidem taught this tutorial during our HTS course:
https://gxy.io/GTN:T00140

@bgruening noticed, that this currently depends on IGV being available locally. Instead, he suggested uploading the tutorial to include the IGV JS tool, which is now available on Galaxy, to be less dependent on local installations.