#019: LSB and info file

How to reproduce:

Check /etc/issue, /etc/issue.net, /etc/lsb-release and /etc/linuxmint/info.

What to expect:
Minty values up to date for the release and edition.

Links aren't valid until a few days before the release, so don't worry if you get a 404 error while testing... you're just ahead of the game :)