Tweak to hide "Secret Group"

This one's OCF specific!

Another optional tweak - in this case, I thought it was a bit silly for my users to ever see "Secret Group" when selecting a usergroup.  They should only see usergroups that they can actually interact with and other usergroups should be totally invisible to them (although this does mean that the other usergroups can't be selected, they probably couldn't be selected too easily when represented as "Secret Group #4" either)

This one's super quick, in sources/forum/ocf.php

Change
to

Now those invisible groups get nicely skipped over, and only named groups in the group selection list