Please create build in Jenkins for support.torproject.org and support-staging.torproject.org

Now that the lektor pkg has been included in debian unstable (https://packages.debian.org/sid/lektor), I think it is a good time to start preparing the build job.

I have prepared a patch to have it run on Jenkins. It is a first tentative, I am sure there will be stuff to fix.

The patch include build scripts for support.tpo and support-staging.tpo.

The repository for the support website lives here: https://gitweb.torproject.org/project/web/support.git/

Please let me know what is missing.

Thanks, -hiro