fix setup

src/main/java/de/bstly/board/businesslogic/UserManager.java

@@ -96,6 +96,7 @@ public class UserManager implements UserDetailsService, SmartInitializingSinglet
 			admin.setUsername("admin");
 			admin.setRoles(Lists.newArrayList("ROLE_ADMIN"));
 			admin.setPasswordHash(passwordEncoder.encode(adminPassword));
+			admin.setLocale("en");
 			localUserRepository.save(admin);
 		}
 	}