Fix a typo in the anti_hoygan_cb function
Fix untranslated string
Fix module unloading

The unload function is should be called "unload" instead of "unload_cb"
Check if there are messages before trying to show them

If everything goes right there should not be any messages, and trying to
print them would fail. Check to ensure we don't cause unnecesary
problems.
Update ginfo URL

DynDNS has closed it's free service, so I've changed back to NO-IP.