TOR_CONTROL_HOST and TOR_SOCKS_HOST do not work as expected when the browser launches tor

TOR_CONTROL_HOST and TOR_SOCKS_HOST allow customizing the listening address of the control port and of the SOCKS connections.

However, we ignore them when we launch tor (so it's listening only on localhost), but we use them when trying to connect.

As a result, we end up with a non-working browser.

We should either ignore them everywhere, or pass them also to tor.