#4 some function to delete / backup statistical data

[Anonymous]

A nice feature would be a function to delete and/or backup the data for interface / host / all for a special time period. For example I do not need the data for the last year (aprox. 2 million entries), but I would prefer to have a backup before I delete them - doing this by hand is possible but I would prefer a generic way using the webinterface.
Anyway ... Truly great work man!