Seaside on github

One url: https://github.com/SeasideSt/Seaside

master branch is the stable release (3.1.3)

dev/seaside32 is the development of 3.2.0

I will copy some additional repositories over. For now, they are mirrors of the smalltalkhub one.

All is built using Travis CI, check out the builds.

As agreed, this is experimental but the idea would be to develop here, create as many branches as we want and encourage people to contribute via pull requests (which are automatically verified using a Travis CI build + we can discuss in the pull request). In addition, the Gemstone repository would be a fork of this one.