don't use -b for 'du' command as FreeBSD does not know it, fixes #1320

Signed-off-by: Michael Kaufmann (d00p) <d00p@froxlor.org>
add php-config for froxlor-vhost and set it as default for froxlor's vhost when fcgid/fpm is used (and the current default is set, custom settings won't be overwritten)

Signed-off-by: Michael Kaufmann (d00p) <d00p@froxlor.org>
don't show 'there is a newer version of froxlor available' if a customzied (unknown) version is being checked

Signed-off-by: Michael Kaufmann (d00p) <d00p@froxlor.org>
Merge remote-tracking branch 'origin/0.9.31'