Remove course number in course title

[n-st]

│   ├── 5942UE Network Science - Soziale und benutzerzentrierte Aspekte web-basierter Informationssysteme
│   │   └── Übung
│   ├── 5942V Network Science _ Soziale und benutzerzentrierte Aspekte web-basierter Informationssysteme
│   │   └── Vorlesung

[n-st]

Already covered by course name edit feature (when that gets merged eventually…)

[fknorr]

Also there is a naming difference (- vs _) that would prevent these lectures to share a common folder w/o renaming them. There should be some internal notion of grouping by lecuture and heuristics to work around typos like these.