adds new email-lists module. not working yet.
more functions added for email list
more effort on email_list.inc.php. still doesn't work. need to get command_email_list_unsubscribe() fixed.
email_lists still not quite there yet.
Merge branch 'dev' into email-lists
finishes unsubscribe feature.
email list delete still not working.
finishes email list functionality.
Adds pre-populated email to subscribe form
Fixes typo.
Merge pull request #310 from mattoehrlein/email-lists

Reviewed! Email lists