Roundcube: improve serving of static resources.

We only serve whitelisted extensions (css, js, png, etc.), and only for
some selected sub-directories.  Access to everything else (incl. log
files and config files) is denied with a 404.  This is unlike upstream's
.htaccess file, which blacklists restricted locations and happily serves
the rest:

    https://github.com/roundcube/roundcubemail/blob/master/.htaccess#L8

To find out which extensions exist on the file system, run

    find -L /var/lib/roundcube/{plugins,program/js,program/resources,skins} -type f \
        | sed -n 's/.*\.//p' | sort | uniq -c

0 files changed, 0 insertions, 0 deletions