Initial code for new entity, groups.
Added form for adding members to the group.
Added TODO.
One more TODO.
Improved styling of notifications

Matches the pastel color scheme of the frontpage.
Merge branch 'master' into permissions
Merge branch 'master' into search-cleanup2
Added access control to publication meta menu.
Style.
Initial permissions on publication.
Push information about groups to the client.
Initial groups directory listing.
Added user and groups managements to publication's meta menu.
Merge branch 'permissions' into groups-design

Conflicts:
	lib/documents/group.coffee
Use inGroups reactively in publish functions.
Added access control to annotation meta menu.
Groups page basic design
Publish annotations with permissions.
Merge branch 'permissions' into groups-design
Label IDs have to be unique.