Add support for tor via orbot
There does not seem to be a way to enable using orbot/tor. This seems fairly simple, and could just be a checkbox that changes network access from direct to socks5 on port 9050. Besides hiding from the network which server the phone is talking to, this can be useful for firewall traversal.
Ideally, one could specify a hidden service address, and phonetrack-android would cope with a certificate with the real name but via the onion address, perhaps via an accept screen.