lino.comments.MentionsByOwner as a new panel to the user detail view
and the ticket detail view.
Monthly user summaries. New model
Similar to SiteSummary, but per user instead of per site and monthly instead of
Add chooser to site, which only allows sites that the author or end_user are subscribed to. Added the site field to insert window
Moved the Noi docs from manuals to the noi repository. Note that these docs are
just the “user docs”, not the specs and API. The specs and API of noi remain
in the book because noi is pilot application for some plugins of the xl (e.g.