Tweaked to use Prefs::getDefault() because we don't want to get any 
left-overs that might be in the preferences backend, but really the 
default values from config/prefs.php.

I define some default rules via the unserialized array in 
$_prefs['rules']['value'] at ingo/config/prefs.php.



when I use the sql-storage-driver the init() methode from the 
Ingo_Storage_filters_sql object adds some default data to the 
table_rules table when running for the first time. my small patch now 
also consider the rules from the prefs-rules settings.

I copied most of the code from the prefs-storage-driver who already does this.



thanks!