Renaming tag file.
Initial code for new entity, groups.
Added form for adding members to the group.
Added TODO.
One more TODO.
Merge branch 'master' into permissions
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.
Temporary check if provided ID for granting is username or group name.