Provision the repo with the common theme (@SallyMcGrath)

[reshamas]

Reminder: If the separation of repo is not complete by Nov 14, upgrade Priority to "Urgent"

@daslerr

[SallyMcGrath]

Done

I have forked the repo and removed the course content, leaving the code and the docs: https://github.com/CodeYourFuture/common-theme

Still to do

• [ ] move the refs to the new place
• [ ] move the docs deployment to the new location
• [ ] test every current site still works