Correct Apache2 URI -> script mapping for the rest script.
Comply with 'use strict' coding restrictions.
Multiple fixes:
 - $cgi->self_url() points to the script; which our URLs don't include
 - initialize logger framework to prevent errors from modules trying to use it
 - the URL should be .../rest/... (instead of .../rest-handler.pl/...)
     since we use the former in our template httpd config
Include reference to hard-coded path in configuration file.