Move domain e.g. to handbook.okfnlabs.org

[rufuspollock]

Or maybe okfnlabs.org/handbook/ - this is probably better (however we do need to then get internal urls sorted ...)

[gsilvapt]

If we change the URl to okfnlabs.org/handbook/, I think we can easily work our way through the internal URLs - that's the beauty of jekyll, right? 😄