We have no global `Hugo` object no more (yay!), and there are some external tools that depends on that value.
These tools need to use get that value from `Response.Result`.
Note that `commands.Execute` now also takes the arguments as a string slice. This should also make it easier to use, not having to modify `os.Args`.
This commit also wraps up this particular issue. Phew!
Test coverage in /commands before: 14.4%
Now: 53.5%
Still work to do, now it is at least possible.
Closes#4598
