Remove lib.old/ PHP code for handling old versions.
Instead just use static doc export.

This reverts commit e3b632068c38e5e153c537b033b8036e954dda8c.
Change .htaccess to use generated HTML files from /api-data directory
(from https://github.com/wkeese/dojo-api-data).

Should we just put all the data in this repository instead?