Add "database has been closed" to DbConnectionClosedException

core/src/main/java/com/seibel/distanthorizons/core/sql/DbConnectionClosedException.java

@@ -20,7 +20,7 @@ public class DbConnectionClosedException extends SQLException
 	{
 		// TODO long term we should prevent using repos that are closed, but for now this is the easier solution
 		String message = e.getMessage().toLowerCase();
-		return message.contains("connection closed") || message.contains("pointer is closed"); 
+		return message.contains("connection closed") || message.contains("pointer is closed") || message.contains("database has been closed");
 	}
 	
 }