Update research-web docs to point to gitlab not git
We're migrating away from jenkins, and using that chance to migrate the research-web git repo from git.tpo to gitlab.tpo as well.
When the dust settles, we should go through whatever meager documentation there is (I see a README file for example) and make sure it points to the right git repos, and also make sure it accurately describes the auto build process for the website.
Anybody who is reading this ticket who wants to do these steps, please do. :)