Privacy Plugin shouldn't load if not supported
there is no need to query the server and try to load privacy lists if the server doesn't support privacy extension.
to identify if privacy is supported the disco#info of the server must answer with "jabber:iq:privacy" (XEP-0016)
if it is not supported the privacy plugin should not be active
Mass closing of all bugs resoved during 2.6.0 and 2.6.1