Bug fix: When changing to another area with the lightbar interface, if the

user's current sub-board is a high-numbered sub-board and they select a message
group with fewer sub-boards, the highlighted sub-board in that group would be
set to that high number and would be incorrect.  That has been fixed.  Copied a
fix from my stand-alone message area chooser.  In that scenario, the current
highlighted sub-board in the other group will be the first one.