New forums added

I have added a new forum called Regional to A42 with, so far, sub-forums for CA-4, Central America and The Americas. While the Where? section was initially set up for only country-specific items it is clear that there needs to be a place for regional information as well.

My long-term goal is to update the categories for both the CEDI (authoritative area) and forums to better represent what fits together logically and work in parallel. That is there will be a logical place ih the Where? CEDI section to post a conclusion from a forum discussion.