Relax browser.download.useDownloadDir and network.http.sendRefererHeader.
The latter sometimes has to be set to "2" (the default) so that
b0rken sites like chase.com load properly. The alternative is to install
the RefControl addon, but there's that usability factor again :-\

modified:   firefox.cfg
Signed-off-by: Christian Kujau <github@nerdbynature.de>