#9 Seperate settings for host age and url age

[Frosty192]

There needs to be a seperate setting for IP age and url
age.
If you could store hosts for a short time the pool of
host IP's would be younger and more likely to still be
connected.(4-8 hours, maybe longer depending on cache
usage)
Then you could store url's for a longer time as these
addresses do not change much.(8-10 days)