hard copy nb folder to no so it works in most cases until I have news from http://bugzilla.gnome.org/show_bug.cgi?id=324062

don't remove contact in gc roster when he leaves if there are awaiting events from him, but only when we read his messages

don't try to remove roster contact when it's about gc contact

we now use 32x32 in Tabbed Chat banner img for state; and can control the size between 32x32 and 16x16 in general [of course only for those iconsets that ship 32x32