[qutebrowser] Reload config from external script

[Philip Scherer]

Hi Valentin,

> Is there a way to externally (from a script) trigger a reload of the
> configuration file by the currently running qutebrowser program?

That should be possible just by running "qutebrowser :config-source" in 
a shell,
since (at least on my machine) qutebrowser automatically "opens" in the 
existing instance
and runs the command there.

Greetings,

Philip