Today key points
1. Updated the validation for subscribers list
2. On subscribe/unsubscribe save itemid to metadata. Codereview created - https://codereview.appspot.com/10386044/
Received feedback and made all the changes, except the ones that involve updating some User methods (is_subscribed_to(), subscribe, unsubscribe). Upon deciding how to handle regexps, ThomasWaldmann suggested using whoosh index.
Plans for tomorrow
Update the codereview mentioning the fact that updated user methods will be included in the next review.
Get familiar with whoosh and structure the coding plan (clean up the discussion) on EP.