Replaced column "Anzahl TN" with "Buchungsbedigungen" in the listing of the activities
Renamed "Dotation" to "Buchungsbedigungen" (only in UI)
Added location in Activity displayfield, otherwise an activity might not be identifiable
Set display date format to d.m.Y for all dates
Added sections listing to the activity detail view
Added sections listing to the event daily view
Changed the ordering of the roles, so that the default role is "Leiter" instead of "Admin"
Formatted the code
Translated all texts to German