Fix summary of changes, cleanup, change data request message delivery logic
Add function for getting data request subscribers, conditional summary based on array of fields passed in to the function
Add dgu_notifications feature
Export field_digest_notifier in dgu_user feature
Revamp user edit form, fix linkedin validation regex, fix menu tabs and breadcrumbs for 'My subscriptions'
Use field_digest_notifier value per user  instead shared hardcoded notifier for all users
Fix bug in caching moderation messages
Fix undefined index notice
Fix undefined index notice
Fix data request test
Fix errors in getting subscribers notifiers and summary of changes rendering logic
Update dgu_data_set_request feature (fix status and outcome fields permissions, change messages settings)
Fix bug in getting users notifiers
Fix breadcrumbs in data  request administration views
Fix breadcrumb on user edit form
Temporarily hide 'Notification frequency' for users with only authenticated role
Add tests step definitions for setting notifications frequency, not receiving particular email and assigning user to the publisher, fix user login with role step
Change 'user received an email' steps in user_account feature to match changes in feature context (which fix escaping double quotes issue)
Change mail checking step definitions - check if email subject contains given string instead if equal to given string
Add data request administration workflow to data_request test feature