Umlaute auf App8 speichern (Muss noch auf app5app8 getestet werden)

Shared/AppSender/AppRequestSender.cs

@@ -74,6 +74,8 @@ namespace BS.Shared.AppSender
 
 			using (WebClient client = new WebClient())
 			{
+				client.Encoding = Encoding.UTF8;
+
 				client.Headers.Add(HttpRequestHeader.ContentType, "application/json");
 
 				response_app8_str = client.UploadString(url, "POST", dataString);