blacklist for homepage, sitemap.xml, etc
removed need to add -Ilib to run generate_mappings.pl
created generate_maps command from  generate_mappings
test_mappings connection timeout of 5 seconds
lrc homepage in lrc.conf
always produce a locations.conf file

Blacklisting / makes it hard to write a mappings file when adding
a site, and detecting if the locations file exists would introduce
unnecessary state in generate_confs.sh.

Much simpler to always generate a site.location.conf file.
options to ignore blacklist in validate_mappings
tidy_mappings uses blacklist to ignore homepage, robots.txt, etc
ran tidy_mappings on ago.csv [after munge fail]
ran mappings through tidy_mappings to remove blacklisted Old Urls