[suggestion] use session instead of cookie

[ctf0]

currently the counter will only save the unique users because the cache is saved forever so it means when the user return to the same page he wont be counted.

so what if we used session instead , which will count the user whether he is new or returned visitor (maybe this could be a config setting where the user chose session or cache) & as session only is affected by the browser window being closed it means that refreshing the page wont effect the counter however am not sure yet if this can tackle the private/incognito browsing or not.