[wplug-web] schema for mailing lists

[James O'Kane]

It's not exactly a 'primary' email address, but rather one that the user 
wants to get email. In some cases, for whatever reason, people might want 
to get email sent to more than one address. They also might want to have 
different options for each address, one might get digest while the other 
gets regular format mail. So I think we need to put an email address field 
on the _map table. (We could put just extra email addresses in a seperate 
table with a unique id, but that doesn't seem nessesary, unless we plan 
to use them for anything else?)
I still need to double check the Mailman API to see what types of queries 
it normally does. But for example, given a list name, it would want all of 
the addresses of who it should send mail to. Another is given an email 
address, is it allowed to send mail to the list in question.

-james