Add Tobias Kuban to list of contributors
As requested here: https://gitlab.com/fdroid/fdroid-website/issues/30#note_32828466
@alterechtschreibung: Is removing "Alterechtschreibung" correct?
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
As requested here: https://gitlab.com/fdroid/fdroid-website/issues/30#note_32828466
@alterechtschreibung: Is removing "Alterechtschreibung" correct?