I don't know, I think 30 minutes of grep might be less pain than the time it would take to try and anticipate everything you might be asked some day and keep it in a separate database. I would certainly separate content like error messages, because I expect someone else will want to edit them, but I wouldn't go to that much trouble with much else unless I knew for sure it would pay off. The extra complexity will not be worth it in most cases. To me, this is a case "You aren't gonna need it."