backend: move comment body2html to Play::DB::Comments
comments->body2html argument is comment hashref
Play::Markdown; db->comments expands @names
db->comments->body2html: fill and return mentions; new api
small recipients logic refactoring in events2email pumper
Play::EmailRecipients
events2email pumper uses Play::EmailRecipients
Play::EmailRecipients understands priorities and user settings
events2email: email on mentions
events2email - pass right notify_field to the email queue
merge notify_mentions with notify_comments setting
events2email: new style urls
Merge branch 'mention-notifies'

http://questhub.io/meta/quest/518bfea393ff0c6b7d000002