major changes for version 3

notable features added:
-Auto remove text other than bulleted list of items
-Remind again if not replied, skip if already replied
Groups digest is not working, fix it
-Changing groups sometimes does not reflect on web app and needs a
refresh
-Avoid user overriding with empty list or support versioning
-Allow to put a date in the subject line or in the body to override and
backfill
-Make code more parametrized/portable, lots of  hard coded links and
limits