• Correct GeoIP update script
• Install GeoIP update script only when GEOIP option is enabled
• Add deinstall script to cleanup GeoIP dat file downloaded with the provided script
• Fix startup script REQUIREs
• Move -e argument to end of command line as suggested by upstream to avoid conflicts with other user provided options
• Remove reference to unspecified security vulnerabilities in pkg-message, leaving a generic suggestion to protect public services
• While here reword pkg-message and add suggestion on how to provide a configuration file to ntopng

Thanks to Simone Mainardi <mainardi at ntop.org> (upstream developer)
for his suggesting most of the above changes and his help.