message: check for base64-secret
diff: @@ -93,7 +93,8 @@ public class JHipsterRegistryApp {
  env.getActiveProfiles());
  String secretKey = env.getProperty("jhipster.security.authentication.jwt.secret");
  - if (secretKey == null ) {
  + String base64SecretKey = env.getProperty("jhipster.security.authentication.jwt.base64-secret");
  + if (secretKey == null && base64SecretKey == null) {
  log.error("\n----------------------------------------------------------\n" +
  "Your JWT secret key is not set up, you will not be able to log into the JHipster.\n"+
  "Please read the documentation at http://www.jhipster.tech/jhipster-registry/\n" +
  