* book creation

* event creation

* "sticky" news flag

* news editor for administrators

* PDF header fix

* draft flag for Document and Article: only writer and administrators see it
    from the Document/Article list, in preview mode

* full Document/Article list for administrators

* polls

* chat

* Users' favourite forum topics

* article categories

* blog

* site-based theme for ckeditor (both ui and the editor)

Poll
	id
	createdAt
	createdBy
	updatedAt
	updatedBy
	updateReason
	endTime (timestamp/date?)
	answers (ArrayCollection of PollAnswers)
	text
	anyoneCanAddAnswers
	multiselect
	voters (is it really required?)
PollAnswer
	id
	createdAt
	createdBy
	updatedAt
	updatedBy
	updateReason
	voters
	poll (back-reference to Poll)
	text

UserForumViewed
	User
	ForumTopic
	timestamp of last visit

BlogPost
	id
	title
	slug
	timestamp
	lead (?)
	text
	poster
	public

ForumTopicGroup
	visible
	locked

ForumTopic
	roles who can access it
	visible
	locked

ForumPost
	last edited by
	last edited timestamp
	last edit reason
	edit count

Event
	last edited by
	last edited timestamp
	last edit reason
	location
	commentable

PrivateChatMessage
	id
	from user
	to user
	timestamp

GroupChatMessage
	id
	from user
	to group
	timestamp

PublicChatMessage
	id
	from user
	to channel (ChatChannel class with id and name fields)
	timestamp