Wiki updates

[kaberett]

I've just written a very short guide to getting Support Board and privs set up on a 'hack (the information was all previously available but was a bit scattered). Please do let me know if you think there's information missing (or edit yourself if you have privs).

I've made some minor tweaks to Privileges. It is still marked as in-need-of-update and does not accurately reflect the full set of available privs. I'm happy to edit all of them in but would like input on how to adapt existing categories to this end :-)