fix missing variable-sign in updater (only regarding nginx users with false fastcgi_param setting updating from 0.9.28.1 to 0.9.29-dev1)

Signed-off-by: Michael Kaufmann (d00p) <d00p@froxlor.org>
set correct guid when using fcgid and own-vhost for froxlor, thx to snoopotic from the forum

Signed-off-by: Michael Kaufmann (d00p) <d00p@froxlor.org>