Rename submissions to recognizable but arbitrary names: Alice, Bob, Charlie

[Jelleas]

Folder names are not easily recognizable, especially if you make use of student numbers. So instead let's show fictional names, to make it easier to keep track of who matches who. It's much easier to remember Bob matches Charlie than it is to 11253123 matches 11253321.

Plus side, this also somewhat reduces bias based on recognizable numbers/names from class.