Added support for HIST users
Since both the NTNU and HIST institutions are going to be taken offline, I've added the ability for the script to download content off of each It's Learning site. The script can determine by itself which institution(s) you have access to, and dumps all content belonging to them.
Additional changes:
- Fixed the incorrect creation of the "overflow directory" on Windows (created when the path name would be too long)
- Fixed files uploaded through "File or Link" pages (also known as "Learning Tool Element") were not downloaded