Include check to see if onion is accessible.

[a-t-0]

Source: https://github.com/HiveMinds/Collabora-Online/issues/32

• [x] Allow starting tor without terminating tor.
• [x] First include check to see if onion domain is reachable:

  curl --socks5-hostname 127.0.0.1:9050 https://check.torproject.org/

  Already wrote that function search for "congratulations" in code.

• [x] Optionally, include check to see if tor log has reached 100% bootstrapping.
• [x] Then write function to check if own http://onion is available online over tor.
• [x] Then write function to check if own https://onion is available online over tor.

[a-t-0]

A https service can be linked to on tor (e.g. dash at local port 8050), accessed over tor via .onion:8070. However the method to check whether tor access is achieved (not even access to the onion domain), did not register a successful connection, even though the onion domain was available (once) over https. After that the installation code terminated tor, probably because the installer code did not detect a successful basic tor connection.

[a-t-0]

Wrote a separate test that directly checks whether the self-hosted http(s) onion address is reachable or not, without intermediate verifications on whether tor is reachable or not. The intermediate verifications seemed unstable, the direct check seemed stable.