removed duplicate rotate from logrotate config

also fixed archives path

Signed-off-by: Sven Nierlein <sven@consol.de>
set default nicelevel to zero

the default should not be to special, so keep the default nice level at zero,
but give users the chance to alter that in the sysconfig file.

Signed-off-by: Sven Nierlein <sven@consol.de>
send logrotate signal only to the single process

and not to the complete process tree

Signed-off-by: Sven Nierlein <sven@consol.de>