new handling of 'administer' and 'moderate' permissions

hi,

i wanted to make my users able to administer shoutbox (read: delete and edit posts) without making them able to moderate it (read: without showing them voting icons as they dont want this). This patch make them able to do this. User without the moderate rights wont see the up/down icons, users with administer rights will be able to delete/edit ALL shouts.

I don't use voting at all in my shoutbox, and it seems my patch can break some thing there. I made an ugly " } else { return 1;}" to make the icons appear, but it seems you wanted to make them only appear if the user hasn't voted yet, wich doesnt work.

Regards,

Charly