visitors log not working properly because url matching is too strict

[sebpiq]

https://github.com/sebpiq/FreedomPortal/blob/master/freedomportal/lighttpd.conf#L34

Apparently when the captive portal loads the page, the url / is not matched, which means that the visitor won't be logged. Find the right regex to log also in this case, without logging too much

[sebpiq]

Still not perfect, but moved to https://github.com/sebpiq/FreedomPortal/blob/master/freedomportal/lighttpd.conf#L44

Now connection logged only when the captive portal is hit