These pages were moved (e.g.  03b42ee6).
Add corresponding redirects.

There are multiple tools for testing in JS. We'll want separate pages for each.

related:
https://github.com/civicrm/civicrm-user-guide/pull/232

Resolve #316

Close #86

This is to make sure internal redirects are working, as recently
implemented in docs-publisher

(even though we don't yet have a system to put them in place)