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

when we want old_group_name, we get it from C_JID column so that it's not escaped

fix the unregister_account bug

NameError: name 'DbusPrototype' is not defined