#1 heroku sync - initial updates

- added a config page
#1 heroku sync - initial updates

- added APP name config
#1 heroku domain sync
#1 heroku domain sync

- just added `Contributors`
#1 fixes - main domain being removed

- this fixes the issue of the main domain (and its wildcard) being
removed from Heroku domains
#1 bug fixes
#1 removed the `active` filter
Merge pull request #2 from deanearlbartolabac/herokudomainsync1

#1 wp multisite heroku domain sync