* Move liberty -> approved
* Move completed liberty specs to liberty-implemented
* Move kilo -> kilo-implemented
* Move juno -> juno-implemented
* Move kilo-archive -> backlog (moving these to approved causes test
failures because the template changed since kilo)
* Reword the header for the index page
* Update unit tests to look at the new "approved" folder
** NOTE **
This patch does not create placeholders in the previous locations
for each spec. This will be done in the following patch so that the
history is preserved. Both patches must be landed together so that web
links are not broken for long.
Change-Id: I61f02731150ea944eafaa8c6ea702210364b3478
Implements: blueprint feature-based-releases
d6caa9a083