make the Administration forum public

[SvenTheBarbarian]

I don't think we need to hide this, the more people we get involved the better I think.

We can still limit posting to administrators only, or add other groups as we see fit.

[SvenTheBarbarian]

I think the Moderators forum could be public too, and could perhaps be moved into the Administration forum to keep the main index clean

[SvenTheBarbarian]

Also I would suggest we can take it a step further and allow general forum members to reply to most Admin forums, and post+reply to certain forums, such as Proposed Changes.

Encourage participation