Test extension with FF 6

[jdreed]

... which released today. Yay.

While we're at it:
a) convince me that setting maxVersion:10 is a bad idea.
b) we should advocate for Mozilla to move extension versioning to API versions or something that don't need to get bumped every 3 months.

Also, kiosk needs a line of code to make it work with FF 6

[geofft]

I think I'm of the opinion that maxVersion = * is correct, since it's better for the extension to attempt to work instead of just being disabled, and we have our own update mechanism orthogonal to the normal Firefox extension update mechanism, and so their versioning is uninteresting for us.

Alternatively, we could move the Firefox extension to addons.mozilla.org instead of a Debian package.

[jdreed]

Oh, look, Ubuntu took FF 6 on release day and it's already on about half the machines in W20. I've tested maxVersion: * and it appears to work on Natty. I'm going to build and upload to proposed and try and find other machines to test on. I may push to production for Natty (since I've tested that).