Bug#541538: flat-volumes = no

[Kristoffer Brissman]

Was redirected here after another bug report: https://gitlab.gnome.org/
GNOME/epiphany/issues/73

Suprised to see this has been open since 2009.

I vote for changing default to 'flat-volumes = no' as I do find the
current default both dangerous and unintuitive. I actually thought the
applications I were running had bugs, but turns out they didn't.