Assegnate 3 su 5 stelle

For now I'm _only_ giving this add-on 3 stars, simply because it's not working in Thunderbird 7.0.1. I _did_ change the em:max number to 7.1, but I don't get any borders. It's too bad, because I LOVE this add-on. I have many accounts, and those borders helped me keep from sending emails from the wrong account, like I just did this evening. (I sent a business email from my personal account rather than the business account.)

PLEASE GET THIS WORKING IN 7+