Make liberty specs index look like the Kilo one, and make sure specs
being proposed to specs/liberty/approved get rendered in the docs job.
Add symbolic link to template in approved and implemented directories so
they aren't counted as empty and the docs build. Fix template to pass
unit tests.
Once a spec is added to approved and implemented respectively the
symbolic links can be removed.
Change-Id: I020a9d32892ef77aa93406a22173c355e106988b
0987cd41eb