Implementing TPA RFC 29 is going to require changes to how SCSS files
are structured in lego. These changes will break existing sites. This
branch exists so that the sites don't have to implement TPA RFC 29 at
the same time.
The site gets restructured, and pointed at this branch.
Because the sites (usually) only track lego's main branch, they won't
be affected by these changes prematurely.
Once all sites have had TPA RFC 29 implemented and have their lego
submodules pointing at this branch, this branch will be merged into
main.
