Enable Matterhorn downloads for TU Vienna.
This does the same thing as https://greasyfork.org/en/scripts/14904-matternorn, but in less lines of code. Originally taken from https://www.informatik-forum.at/showthread.php?95667-Matterhorn-Stream-download&s=8eb39304383076795203f1f3e2380f89&p=828393&viewfull=1#post828393
