Improve functionality:

De-goof and partially normalize:
  gentoo.nanorc
  groff.nanorc
  haskell.nanorc # NOTE: While there used to be a source cited, we'll never know what was there before since it's a dead link with no caches.
  havp.nanorc
  html.nanorc
  info.nanorc
  ini.nanorc
  initng.nanorc
  initscript.nanorc
  java.nanorc
  js.nanorc # NOTE: This thing is still butt-ugly, and doesn't work in bright-background terminals at all.
  lex.nanorc
  log-stuff.nanorc
  lua.nanorc # NOTE: Similar issues to js.nanorc, but even slightly worse in white terminals.
  maincf.nanorc
  makefile.nanorc
  man.nanorc
  markdown.nanorc
  mimetype.nanorc
  named.nanorc
  nanorc.nanorc
  paludis.nanorc # NOTE: This nanorc has the same issue as js.nanorc and lua.nanorc, but with the unsettling twist of it favouring light-background terminals, not sure why this was ever included, and who would use something like this.
  passwd.nanorc
  patch.nanorc
  perl.nanorc
  php.nanorc
  po.nanorc
  pov.nanorc
  privoxy.nanorc
  python.nanorc # NOTE: python.nanorc is rather bare, maybe a new one should be forged from cython.nanorc
  reST.nanorc
  ruby.nanorc
  tab.nanorc
  tcl.nanorc
  tex.nanorc
  todo.nanorc
  txt2tags.nanorc
  url.nanorc
  xdefaults.nanorc
  xml.nanorc
  yacc.nanorc

Remove commented legacy blocks from:
  privoxy.nanorc

Remove altogether:
  mcchangelog.nanorc # NOTE: roughly identical to changelogs.nanorc
  profile.nanorc # NOTE: This really ought not exist, the handlers have been added to bash.nanorc
  rcfiles.nanorc # NOTE: Same situation as with profile.nanorc
  sources_list.nanorc # NOTE: replaced by aptsrclist.nanorc
  vhost.nanorc # NOTE: Nearly identical to apache2.nanorc, aside from some missing keywords. vhost.conf pattern has been added to apache2.nanorc.