cubicweb-calendar #2467048 Add json(p) view to get day types for a given user and date span [deprecated]

Since the data model is really sophisticated and computing day types involves quite a few lines of python code, this would provide a simple way for third-party applications to download day types and integrate this information in other calendars.

done in0.8.0
load left0.000
closed by<not specified>
patch[json] provide a simple json(p) entry point to get day types over a given period (closes #2467048) [rejected]