Resolve "router: NPE bei ZuständigerStelle ohne orgId"

Closes #1

common/src/main/java/de/ozgcloud/eingang/Application.java

@@ -27,10 +27,12 @@ import java.util.TimeZone;
 
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.scheduling.annotation.EnableAsync;
 import org.springframework.scheduling.annotation.EnableScheduling;
 
 @SpringBootApplication(scanBasePackages = { "de.ozgcloud" })
 @EnableScheduling
+@EnableAsync
 public class Application {
 
 	public static final String ZUFI_MANAGER_GRPC_CLIENT = "zufi-manager";