#588 Migrate to GitHub to have a better developement

[Neustradamus]

Dear @squirrelmail team, @pdontthink, @jangliss, @jervfors, @kink, @alex-brainstorm, @avel, @bouchon, @braverock, @perlstalker, @tassium,

In first, I wish you a Happy New Year!

I think that to go in the future, it is time to migrate to GitHub to improve the code, the developement, to have new contributors, and contributions, etc.

It is possible to do it?

Thanks in advance.

Regards,

Neustradamus