Group related things

916d84b: If lootMethod or lootThreshold is invalid, portrait menus become unusable to the entire raid. I don't know whether it is useful for other exploits (invalid loot method server-side?) (http://www.wowwiki.com/MACRO_threshold)

2e897d0: The master looter can be anyone, he/she doesn't have to be in the group.

08cd624: Patch 3.3.0 (08-Dec-2009): Any party member may mark targets (this does not apply to raid groups). (Previously only party leaders could mark.) The option is available client-side but unusable atm. Hostile players shouldn't be targeted this way.