Use v3 hidden services for tor.

Tor 0.3.5.x has been out for quite a while now and since onion services in version 3 are superior in basically every aspect, in comparison with the 'normal' .onion addresses, ZeroNet should probably use the v3 hidden services by default(or at least support them) in Tor enabled/tor always-mode.

**Additional context**
This issue is mirrored from the [GitCenter ZeroNet repository](http://127.0.0.1:43110/1GitLiXB6t5r8vuU2zC6a8GYj9ME6HMQ4t/repo/issues/view/?1P4w4Rvh4vS9r6G5xTiSh8qEW87EKZtnJB/9@1DfrA2M9Qra6stqT6tzwNMYNweswY54KAC)(you need to install ZeroNet to visit this link)