Comment 35 for bug 849624

Just my two cents:
I think the users won't mind an extra extension for now and a fix in trunk. I think it's more important to have this working and with an extension we don't have to touch TB-2-code.

As for the Addressbook: "thunderbird.exe -addressbook" does work but I think this is something different as the main-view of lightning doesn't open if you start Thunderbird this way.