Add German translation for collective settings page

modules/webapp/src/main/elm/Messages/Comp/CalEventInput.elm

@@ -1,4 +1,8 @@
-module Messages.Comp.CalEventInput exposing (Texts, gb)
+module Messages.Comp.CalEventInput exposing
+    ( Texts
+    , de
+    , gb
+    )
 
 import Http
 import Messages.Comp.HttpError
@@ -35,3 +39,19 @@ gb =
     , formatDateTime = DF.formatDateTimeLong Messages.UiLanguage.English
     , httpError = Messages.Comp.HttpError.gb
     }
+
+
+de : Texts
+de =
+    { weekday = "Wochentag"
+    , year = "Jahr"
+    , month = "Monat"
+    , day = "Tag"
+    , hour = "Stunde"
+    , minute = "Minute"
+    , error = "Fehler"
+    , schedule = "Zeitplan"
+    , next = "Nächsten Zeiten"
+    , formatDateTime = DF.formatDateTimeLong Messages.UiLanguage.German
+    , httpError = Messages.Comp.HttpError.de
+    }