-Remove methods and classes used for the migration from old database schema to new-Remove communities XMLs-rearrange packages (remove 'migration' and 'claimsDemo') Properties paths didn't change!
1. Add entity 'Notification': pairs of mail-openaireId, with the preferences for notifications of this user for this id.2. Add FetchNotificationHandler and NotificationHandler for 'Notification' entity.3. springContext-claimsDemo.xml: Add beans for FetchNotificationHandler, NotificationHandler, defaultFrequencyInHours....