DB-Connection bearbeitet, Room-Mapper angefangen.
Delete Methoden angefangen in Impl
BOs noch besser. Mapper zu 70% fertig.
Merge remote-tracking branch 'origin/vanessa'
Merge branch 'JuliusRenner' into vanessa
Merge remote-tracking branch 'origin/master' into vanessa
Restliche Mapper-Methoden implementiert.
Merge branch 'master' into JuliusRenner
Merge branch 'master' into vanessa
Init methode in der Impl-Klasse vervollständigt