* test(backend): check internal ip

issue #465

* test(backend): minimal ubuntu for testing

issue #465

* feature(frontend): show internal ip

issue #465

* wip(backend): fetch internal IP

issue #465

* feat(frontend): show machine information

issue #465

* test(frontend): expecting no IP after shutdown

issue #465

* wip(backend): remove ip after shutdown

issue #465

* wip(backend): refresh machine status if no ip and active

issue #465